What causes Brownian motion in colloids?
A. molecules of the dispersion medium colliding with dispersed phase particles
B. coagulation of particles of the dispersed phase
C. erratic flashes of light
D. There is no Brownian motion in colloids.

Answers

Answer 1
Hey there!

Your answer is option A.

"Molecules of the dispersion medium colliding with dispersed phase particles" is what causes Brownian motion in colloids.

Hope this helps you.
Have a great day!
Answer 2

Answer:

The correct answer is option A.

Explanation:

Brownian motion is a random motion of particles present in the fluid such as air or liquid.This motion of the particles  is due to collision with fast moving molecules in a fluid.

In colloids , molecules of dispersed phase are in motion due to the fast motion of dispersion medium's particle which imparts motion to these particles of dispersed phase by means of collision.


Related Questions

If the average salinity of seawater is 35 ppt,how many grams of dissolved salts will 500 grams of seawater contain

Answers

(35/1000) x 500 g = 17.5 g

What mineral has the least hardness according to the scale?

Answers

The softest mineral in the Mohs Hardness Scale is talc.
Talc is often used in baby powder and corn starch, among other things. Talc cleaves into thin sheets, and it is held together only by van de Waals bonds, which allows these sheets to slip past each other. This gives the mineral its softness and it is often valued as a high-temperature lubricant.

Which statement about the orinoco river is true.

A. IT FLOWS THROUGH ECUADOR

B. IT IS SECOND LONGEST RIVER IN SOUTH AMERICA

C. IT FLOWS THROUGH VENEZUELA

D. IT EMPTIES INTO THE PACIFIC OCEAN

Answers

It's C: It flows through Venezuela

Answer:

C. IT FLOWS THROUGH VENEZUELA

Explanation:

correct asnwer

All chemical reactions involve a transfer of energy true or false

Answers

Answer is: true.
For all chemical reaction some energy is required and that energy is called activation energy (energy that needs to be absorbed for a chemical reaction to start). There are two types of reaction: endothermic reaction (chemical reaction that absorbs more energy than it releases) and exothermic reaction (chemical reaction that releases more energy than it absorbs).

Answer:

true

Explanation:

5.
What happens in a condensation reaction?

cross-linking of monomers

head-to-tail joining of monomers

side-by-side joining of monomers

substitution of a halogen on monomers

Answers

The answer is head-to-tail joining of monomers. Monomer used in condensation have  two functional groups that combine to form amide and ester linkages. When this reaction occurs, water molecules is removed and that is why it is called a condensation reaction.

Answer:

B: head to tail joining of monomers

Explanation:

The blank solution used to calibrate the spectrophotometer is 10.0 mL of 0.2 M Fe(NO3)3 diluted to 25.0 mL with 0.1 M HNO3. Why is this solution preferred to simply using de-ionized water for the calibration?

Answers

Final answer:

The blank solution used to calibrate the spectrophotometer contains 0.2 M Fe(NO3)3 and 0.1 M HNO3 to reflect the composition of the actual samples and to maintain consistent ionic strength and acidity, leading to more accurate and reliable measurements.

Explanation:

When calibrating a spectrophotometer, it is preferred to use a blank solution that is reflective of the matrix of the samples being measured. In this case, the blank solution contains not just de-ionized water but also 0.1 M HNO3 and 0.2 M Fe(NO3)3 diluted accordingly. This approach is preferred because it accounts for the absorption of the solvent and any potential interaction with the analyte.

The use of HNO3 in the calibration blank maintains a consistent ionic strength and acidity as in the samples, which can affect the absorbance readings. This method reduces background noise and leads to more accurate and reliable measurements when comparing the blank to the actual samples containing Fe³+ ions.

The blank solution for calibration includes Fe(NO₃)₃  and HNO₃ to match the sample matrix, reducing calibration errors caused by matrix effects. De-ionized water fails to replicate the sample's chemical environment.

The blank solution used to calibrate the spectrophotometer is 10.0 mL of 0.2 M Fe(NO₃)₃  diluted to 25.0 mL with 0.1 M HNO₃. This solution is preferred over de-ionized water because it closely matches the matrix of the actual samples being measured, ensuring that any absorbance readings due to the matrix itself are accounted for. This reduces the possibility of matrix effects, thus providing a more accurate calibration for the spectrophotometer.  This ensures more accurate spectrophotometer readings.

De-ionized water lacks the chemical environment of the sample solutions, which could lead to calibration errors. By using a matrix-matched blank, the spectrophotometer can be properly calibrated, accounting for interactions between Fe(NO₃)₃ and HNO₃ that might affect absorbance.

If you don't reply with an actual answer I will report it and you will be reported and itll give me back my points
1.If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12
liters, what is the temperature?
2.If I have an unknown quantity of gas at a pressure of 121.6 kPa, a
volume of 31 liters, and a temperature of 87 0C, how many moles of
gas do I have?
3.If I contain 3 moles of gas in a container with a volume of 60 liters and
at a temperature of 400 K, what is the pressure inside the container?
4.If I have 7.7 moles of gas at a pressure of 0.09 atm and at a temperature
of 56 0C, what is the volume of the container that the gas is in?
5.If I have 17 moles of gas at a temperature of 67 0C, and a volume of
88.89 liters, what is the pressure of the gas?
Use Dalton’s Law of Partial Pressures and Grahams law of effusion to solve
the following problems:


6.At a certain temperature, molecules of methane gas, CH4 have an average
velocity of 0.098 m/s. What is the average velocity of carbon dioxide
molecules at this same temperature?
7.7.) Find the relative rate of diffusion for the gases chlorine, Cl2 and ethane,
C2H6.
8.495 cm3 of oxygen gas and 877 cm3 of nitrogen gas, both at 25.0 °C and
114.7 kPa, are injected into an evacuated 536 cm3 flask. Find the total
pressure in the flask, assuming the temperature remains constant.

Answers

i think its number 5 

What mass of KBr (in grams) should you use to make 150.0 mL of a 1.70 M solution of KBr?

Answers

V = 150.0 mL = 0.15 L
c = 1.70 M
m=?
For the purpose, the equation for molar concentration is necessary:
c=n/V
From the equation we can determine the number of moles:
n= cxV = 1.70M x 0.15L = 0.255 mole
Now we can calculate the mass:
m = nxM = 0.255 x 119= 30.34 g is necessary 


Final answer:

To make 150.0 mL of a 1.70 M KBr solution, you need 30.33 grams of KBr. This is calculated by multiplying the molarity (1.70 M), the volume in liters (0.150 L), and the molar mass of KBr (119.00 g/mol).

Explanation:

To calculate the mass of KBr needed to make 150.0 mL of a 1.70 M solution, we need to use the formula:

Mass (g) = Molarity (M) × Volume (L) × Molar Mass (g/mol)

First, convert the volume from milliliters to liters by dividing by 1000:

150.0 mL = 0.150 L

Next, find the molar mass of KBr, which is the sum of the atomic masses of potassium (K) and bromine (Br). Potassium has an atomic mass of 39.10 g/mol, and bromine has an atomic mass of 79.90 g/mol:

Molar Mass of KBr = 39.10 g/mol + 79.90 g/mol = 119.00 g/mol

Now, we can calculate the mass of KBr:

Mass of KBr = 1.70 M × 0.150 L × 119.00 g/mol = 30.33 grams

Therefore, you should use 30.33 grams of KBr to make the solution.

The wavelength of light in the infrared region is 4.257 × 10-7 cm. What is the frequency of this light?

Answers

7.04×10^14 is the frequencyof light by the relation:
wavelength= wave velocity/frequency

What does the suffix -ide indicate when naming an ionic compound?

Answers

it means it's the anion or the negatively charged atom

Which type of society survives mainly by foraging for food?

A. Hunter-gatherer
B. Agrarian
C. Industrial
D. Pastoral

Answers

The appropriate answer is a. HUNTER-GATHERER. Hunter-gatherer societies are nomadic and they forage for edible plants, bean, fruits and nuts. They also hunt wild game for food. Early humans in the Neolithic period practiced this way of life. 
Agrarian societies thrive on agriculture which they depend on for sustainable and for trade. Animals and plants are domesticated and so people can settle and build a society. Pastoral agriculture is a semi-nomadic lifestyle where the society is centered around keeping herds of grazing animals. Industrial societies focus on manufacturing and this is the backbone of the society. 

Answer :

D. Agrarian

Explanation:

What is the IMA of the following pulley system?


2
3
4
5

Answers

I think  the answer is five 

Option D: 5

IMA is Ideal Mechanical advantage, for pulley system it is equal to the number of ropes present in the system. At ideal conditions, it is equal to the number of times, input force is getting multiplied. For example, If a pulley uses two ropes, its required mechanical force to displace the load will be divided into two or the distance that should be pulled will be multiplied by two (keeping total energy constant).

In the pulley system in diagram, there are total of 5 ropes in the system that is total strand that lead directly to the load thus, IMA for this pulley system will be 5.


*QUICK*
Measuring the level of lead in drinking water is the job of _____.
A.) a physical chemist B.) a biochemist C.) an analytical chemist

Answers

Answer:

Measuring the level of lead in drinking water is the job of an analytical chemist.

Explanation:

The work of analytical chemists is to analyse the chemical properties and nature of the substance.

They have to perform different experiments using instruments and then conclude about the nature of the sample, chemical properties of the sample, toxicology, concentration and other properties of the samples and then the analytical chemists should give a detailed report on the measurements or analysis he or she has carried out.

So the measuring of lead in drinking water forms under the measurement of toxicology of water as lead is toxic on reaction with water so it is the job of analytical chemists only.

Answer:

Definitely an analytical chemist. Because the substance has to be analyzed to look for those chemicals and toxins.

Explanation:

"which common material is an example of a polymer?"

Answers

The answer is plastic...

Hope this helps.

The formation of a solid when two liquids are mixed indicates a reaction.
a. True
b. False

Answers

A. True, because they reacted to become a solid.

Pellets of calcium chloride are spread on a sidewalk covered in water that is 36°c. under which circumstance will the calcium chloride dissolve faster? it rains, increasing the amount of water on the sidewalk. sand is sprinkled on the sidewalk. the water cools to a temperature of 33°c. people walking on the sidewalk crush the calcium chloride pellets. the air pressure increases as the weather changes.

Answers

It is the fourth answer, " People crush them when they walk on them" Hope this helps!

Answer:

people walking on the sidewalk crush the calcium chloride pellets.

Explanation:

When calcium chloride pellets are crushed with feet it increases the surface area of the calcium chloride. As the surface area increase the number of collision between the reactant molecules increases. Here the reactant molecules are calcium chloride ions and water molecules. In the process of dissolution the calcium chloride ions get hydrated by the dipoles of the water molecules. As the frequency of collision increases it lowers the activation energy or threshold barriers to start a reaction.  

Which of the following best explains why you sanded the copper wire before burning it?
to create less friction between the copper and the tongsto make sure that copper metal was exposed on the surface of the wireto make the copper wire flammableto weaken the copper wire so it would be more reactive

Answers

Answer: Option (b) is the correct answer.

Explanation:

When copper wire is place into the atmosphere or anywhere then there is possibility that some oxide layer or impurity must have deposited over its surface.

So, when we sanded copper wire then these impurities get removed and copper metal gets exposed onto the surface.

Thus, we can conclude that you sanded the copper wire before burning it to make sure that copper metal was exposed on the surface of the wire.

Answer:

B. to make sure that copper metal was exposed on the surface of the wire

Explanation:

Right on Edgen.

A soda has a volume of 560 ml and a density of 3.2g/ml. what is the mass?

Answers

Answer: 1792 g or 1.792 kg

Reason:
We know that,
Density = [tex] \frac{Mass}{Volume} [/tex]

Given: Volume = 560 ml, Density = 3.2 g/ml.

Therefore, Mass = Volume x Density
                           = 560 x 3.2
                           = 1792 g
                           = 1.792 kg

Thus, mass of 560 ml soda, having density of 3.2g/ml is 1792 g.

Answer: Mass of the substance is 1.792 kg

Explanation: Density of a substance is defined as the mass contained per unit volume.

[tex]Density=\frac{mass}{volume}[/tex]

Given:

Volume = 560 ml

Density = 3.2 g/ml

[tex]Mass=Density\times volume[/tex]

[tex]Mass=3.2g/ml\times 560ml=1792g[/tex]

Mass of the substance is 1792 g or 1.792 kg.

If the half-life of a radioactive isotope is 5,000 years, how much of the radioactive isotope in a specimen will be left after 10,000 years?

Answers

10,000÷5,000=2 which means the amount of radioactive isotope has reduced by half twice. so, 25% of the starting amount of radioactive isotope will be left.

Final answer:

After two half-lives of 5,000 years each, only 25% of the original radioactive isotope would remain.

Explanation:

If the half-life of a radioactive isotope is 5,000 years, after 10,000 years, two half-lives will have passed. According to exponential decay, after the first half-life, 50% of the original isotope remains. After the second half-life, another half of this remaining amount will have decayed, leaving only 25% of the original isotope. We can use the expression (1/2)n, where 'n' is the number of half-lives, to calculate the remaining amount of the isotope. In this case, it would be (1/2)2 = 1/4 or 25%.

Addition of a benzopyrene adduct is the result of what type of reaction?

Answers

alkylation reaction
hope it helped give thanks :)

which element would be a positive ion in a compound: Sr or Te

Answers

The element that would be a positive ion in a compound between Sr and Te would be Sr.

How to determine the charge on ions

Elements form positive or negative ions based on the number of valence electrons their atoms contain and the tendency to either donate these electrons to form bonds or accept more electrons to form bonds.

The donation of acceptance of electrons will enable atoms to form an octet structure.

The number of valence electrons in Sr atoms is 2. In order to form an octet when bonding, these 2 electrons are readily donated rather than accepting more electrons. Thus, Sr ions are usually [tex]Sr^{2+[/tex].

The number of valence electrons in Te atoms is 6. Hence, instead of donating these electrons to form an octet, it will rather accept 2 more electrons. Thus, Te ions are usually [tex]Te^2^-[/tex].

In other words, Sr would be the positive ion in a compound.

More on ion formation can be found here: https://brainly.com/question/305470

#SPJ1

Final answer:

Strontium (Sr) would form a positive ion in a compound since it is an alkaline earth metal that readily loses electrons to become a cation, whereas tellurium (Te) tends to gain electrons to form an anion.

Explanation:

Between the elements strontium (Sr) and tellurium (Te), Sr would typically form a positive ion in a compound. This is because Sr is an alkaline earth metal and is found in Group 2 of the periodic table, where elements readily lose electrons to form cations with a +2 charge. On the other hand, Te is a metalloid in Group 16, known for gaining electrons to form anions with a -2 charge. Compounds are neutral, which means that the total number of positive charges must balance the total number of negative charges.

Additionally, Sr is lower down in its group than Ca, making it easier to remove an electron from Sr than from Ca. Hence, Ca has the higher ionization energy (IE) compared to Sr. When considering a potassium ion (K+), it would also be harder to remove an electron because it already has a positive charge. Therefore, the IE of K+ is significantly higher, especially since the next electron to be removed would come from a different electron shell.

Yes or no: will a precipitate form when solutions of ba(no3)2 and koh are mixed?

Answers

No, a precipitate will not form when barium nitrate, Ba(NO3)2, reacts with potassium hydroxide, KOH, in aqueous solution because both products are soluble in water.

How many phases of matter are present in whipped cream?

Answers

I think it has three phases, that is solid phase, liquid phase and gas phase.
Whipped cream is a colloid. It consists of a gas in a liquid, so it is a foam. The solution is a colloidal suspension with solid particles in a liquid. 

Which substance produced in the laboratory is used as a post exposure preventative measure against rabies?

Answers

I think the answer is synthetic immunoglobulins: Immunoglobulins are also called antibodies, they are glycoproteins molecules produced by plasma cells (white blood cells). They act as the critical part of the immune response by specifically recognizing and binding to particular antigens, such as bacteria and viruses, and enhancing their destruction. Synthetic immunoglobulins may differ in structure to that of an antibody and can be generated either from nucleic acids, as in the case of aptamers, or from non-immunoglobulin protein scaffolds/peptide aptamers, into which hypervariable loops are inserted to form the antigen binding site.

Which fact is NOT true about gravity?

Question 24 options:

Gravity depends on distance.


Gravity depends on weight.


Gravity depends on mass.


The force of gravity between two objects will never be 0.

Answers

the force of gravity between two objects will never be 0
Final answer:

The fact that 'Gravity depends on weight' is not true. Gravity doesn't depend on weight; instead, weight is actually a result of the gravitational force. Gravity does depend on mass and distance: bigger mass and closer distance result in stronger gravitational force.

Explanation:

The statement 'Gravity depends on weight' is NOT true about gravity. Gravity does not depend on weight; instead, it is actually the other way around - weight is the force that gravity exerts on an object. Additionally, gravity does depend on mass and distance - the larger the mass and the closer the objects, the stronger the force of gravity. However, it's important to remember that the force of gravity will not be zero except in the theoretical case where the objects are at infinite distance from one another.

Weight is actually dependent on gravity because it's the force that gravity exerts on an object. So, in this case, weight depends on gravity, not gravity on weight.

Learn more about Gravity here:

https://brainly.com/question/31321801

#SPJ12

What is the molarity of a NaOH solution if 15.0 mL of the solution is neutralized by 38.5 mL 0.150 M H3PO4 solution?

Answers

The solution for this problem is:
Look for the moles of NaOH which is 0.0385 L x 0.150 M = 0.00578 
H3PO4 + 3 NaOH = Na3PO4 + 3 H2O 
moles H3PO4 = 0.00578 / 3 = 0.00193 
M of H3PO4 = 0.00193 mol / 0.0150 L= 0.128 is the molality we are looking for in this problem.

What is the equilibrium associated with ka3 for h3po4?

Answers

Phosphoric acid has 3 pKa values (pKa1=2.1,  pKa2=6.9, pKa3= 12.4) and after 3 ionization it gives 3 types of ions at different pKa values: 

H₃PO₄(aq) + H₂O(l) ⇌ H₃O⁺(aq) + H₂PO₄⁻ (aq)         pKₐ₁ 


H₂PO₄⁻(aq) + H₂O(l) ⇌ H₃O⁺(aq) + HPO₄²⁻ (aq)       pKₐ₂


HPO₄²⁻(aq) + H₂O(l) ⇌ H₃O⁺(aq) + PO₄³⁻ (aq)          pKₐ₃ 

The last equilibrium is associated with the highest pKa value (12.4) of phosphoric acid. There the last OH group will lose its hydrogen and hydrogen phosphate ion (HPO₄²⁻) turns into phosphate ion (PO₄³⁻).

The equilibrium associated with [tex]\text{K}_{a3}[/tex] for [tex]\text{H}_3\text{PO}_4[/tex] is as follows:

 [tex]\boxed{\text{HPO}^{2-}_{4}(aq)+\text{H}_{2}\text{O}(l)_{\rightleftharpoons}^{{K}_{a3}}\text{PO}^{3-}_{4}(aq)+\text{H}_{3}\text{O}^{+}(aq)}[/tex]

Further Explanation:

Acids are substances that can donate hydrogen ion [tex]\text{H}^{+}[/tex] or proton in their aqueous solutions.

Classification of acids:

1. Monoprotic acids

Acids that are capable to donate single proton in solutions are monoprotic acids. For example, HCl is a monoprotic acid due to its tendency to donate only one proton in solutions.

2. Polyprotic acids

Acids that are capable to donate more than one proton in aqueous solutions are called polyprotic acids. For example, [tex]\text{H}_2\text{SO}_4[/tex] and [tex]\text{H}_3\text{PO}_4[/tex] are all polyprotic acids.

Acid strength is measured with the help of dissociation constant. Itis denoted by [tex]\text{K}_a[/tex]. Since [tex]\text{H}_3\text{PO}_4[/tex] contains three hydrogens in it, it can donate three hydrogen ions in solutions so it is triprotic acid.

Dissociation of [tex]\text{H}_3\text{PO}_4[/tex] occurs as follows:

[tex]\begin{aligned}\text{H}_3\text{PO}_4(aq)+\text{H}_2\text{O}(l)_{\rightleftharpoons}^{K_{a1}}\text{H}_2\text{PO}^{-}_{4}(aq)+\text{H}_3\text{O}^{+}(aq)\\\text{H}_2\text{PO}^{-}_{4}(aq)\text{H}_2\text{O}(l)_{\rightleftharpoons}^{K_{a3}}\text{HPO}^{2-}_{4}(aq)+\text{H}_{3}\text{O}^{+}(aq)\\\text{HPO}^{2-}_{4}(aq)+\text{H}_{2}\text{O}(l)_{\rightleftharpoons}^{K_{a3}}\text{PO}^{3-}_{4}(aq)+\text{H}_{3}\text{O}^{+}(aq)\end{aligned}[/tex]  

Where,

[tex]{{\text{k}}_{{\text{a1}}}}[/tex] is the first dissociation constant of [tex]{{\text{H}}_{\text{3}}}{\text{P}}{{\text{O}}_{\text{4}}}[/tex].

[tex]{{\text{k}}_{{\text{a2}}}}[/tex] is the second dissociation constant of [tex]{{\text{H}}_{\text{3}}}{\text{P}}{{\text{O}}_{\text{4}}}[/tex].

[tex]{{\text{k}}_{{\text{a3}}}}[/tex] is the third dissociation constant of [tex]{{\text{H}}_{\text{3}}}{\text{P}}{{\text{O}}_{\text{4}}}[/tex].

The expression of [tex]{{\text{k}}_{{\text{a3}}}}[/tex] for [tex]{{\text{H}}_{\text{3}}}{\text{P}}{{\text{O}}_{\text{4}}}[/tex] is as follows:

[tex]{{\text{k}}_{{\text{a3}}}} = \dfrac{{\left[ {{\text{PO}}_4^{3 - }} \right]\left[ {{{\text{H}}_{\text{3}}}{{\text{O}}^ + }} \right]}}{{\left[ {{\text{HPO}}_4^{2 - }} \right]}}[/tex]  

Learn more:

Calculation of equilibrium constant of pure water at 25°C: https://brainly.com/question/3467841 Complete equation for the dissociation of [tex]{\text{N}}{{\text{a}}_{\text{2}}}{\text{C}}{{\text{O}}_{\text{3}}}[/tex] (aq): https://brainly.com/question/5425813

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Equilibrium

Keywords: acids, monoprotic acid, polyprotic acid, hydrogen ions, ka3, H3PO4, acid strength, dissociation constant, first dissociation constant, second dissociation constant, third dissociation constant.

A 250 mL sample of a .125 M solution of NaOH contains _____g of NaOH

Answers

Hello!

A 250 mL sample of a 0,125 M solution of NaOH contains 1,25 g of NaOH

To calculate that, we use the definition of molar concentration (M=moles/L) and the solution volume in L to get the moles of NaOH in the solution. After that, we get the mass of NaOH from the molar mass. All these calculations are shown in the following conversion factor:

[tex]MassNaOH=250mLsol* \frac{1L}{1000mL}* \frac{0,125 mol NaOH}{1 Lsol}* \frac{39,997 g NaOH}{1 mol NaOH} \\ =1,25gNaOH [/tex]

explain why it is often milder in areas such as coastal Maryland while areas such as Kansas or Iowa have more extremes in temperature?

Answers

Final answer:

Coastal areas like Maryland have milder climates due to the moderation by nearby ocean water, which has a stable temperature that influences the air temperature over land. In contrast, inland areas such as Kansas and Iowa experience more extreme temperatures due to their distance from the ocean's moderating effects and greater influence from continental air masses.

Explanation:

The location of an area relative to the coast significantly influences its climate due to the effects of oceanality and continentality. Coastal Maryland, being near the Atlantic Ocean, experiences milder conditions because the temperature of ocean water remains relatively stable throughout the year, moderating the air temperature over the land. In contrast, inland areas such as Kansas and Iowa are subject to more extreme temperatures due to their distance from the ocean's moderating influence, leading to significantly warmer summers and colder winters.

Ocean water has a high heat capacity, which means it absorbs and releases heat more slowly than land, resulting in a smaller range of temperature fluctuations. This heat inertia is why coastal areas tend to have more moderated climates. For example, airflow from the ocean keeps San Francisco's climate mild and more constant throughout the year, while Salt Lake City, which is an inland city at approximately the same latitude, experiences greater temperature variation.

In summary, coastal regions are influenced by the temperature of the nearby ocean, which changes little with the seasons. This results in a milder climate with less variation between summer and winter temperatures. Conversely, inland regions are more subject to continental air masses, leading to a larger range in temperatures and more extreme seasonal conditions.

Using the example reaction aA + bB → cC + dD write the potential first order and second order rate laws

Answers

Given the equation aA + bB → cC + dD, which is an irreversible reaction, the most common rate laws are the product of the concentration of the reactants, each raised to a power.

This is the the general form of such laws.

r = K [A]^m * [B]^n

The order of the reaction is the sum of the exponents: m + n.

For first order reaction m+ n = 1, yields to the next potential laws:

m = 1, n = 0 => r = k [A]
m = 0, n = 1 => r = k [B]
m=0.5, n = 0.5 => r = [A]^0.5 [B]^0.5

And other combinations where the sum of the exponents are 1.

For second order reactions, m + n = 2, these are some potential laws:

m = 1, n = 1 => r = k[A][B]
m=0, n = 2 => r = k[B]^2
m=2, n = 0 => r = k[A]^2

m=1.5, n = 0.5 => r = k[A]^1.5 [B]^0.5

As you see there are many potential laws all of them with the form

r = [A]^m [B]^n, being the order of the reaction m + n

Final answer:

The potential first-order rate law is rate = k[A] or rate = k[B], and the potential second-order rate law is rate = k[A][B].

Explanation:

The potential first-order rate law for the given reaction aA + bB → cC + dD is rate = k[A] or rate = k[B]. This means that the rate of the reaction is directly proportional to the concentration of either reactant A or reactant B.

The potential second-order rate law for the given reaction is rate = k[A][B]. This indicates that the rate of the reaction depends on the product of the concentrations of both reactant A and reactant B.

Other Questions
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