Chemical Kinetics Quiz

What is the branch of physical chemistry that deals with the speed of chemical reactions?

• Thermodynamics

• Quantum chemistry

• Chemical kinetics

• Electrochemistry

Which of the following factors does NOT influence the rate of a chemical reaction?

• Concentration

• Temperature

• Catalyst

• Pressure

What is the rate of reaction expressed as?

• Change in volume

• Decrease in concentration of reactants

• Increase in temperature

• Increase in pressure

In the reaction A → B, how is the rate of reaction defined?

• -d[A]/dt

• d[B]/dt

• None of the above

• Both -d[A]/dt and d[B]/dt

What are the units of rate for a chemical reaction?

• mole/litre hour

• mole/litre min

• mole/litre sec

• mole/litre

Which of the following statements is true regarding the rate of a chemical reaction?

• It is always negative

• It can be negative or positive

• It is always positive

• It can be zero

What effect does increasing temperature generally have on the rate of a chemical reaction?

• Decreases the rate

• Increases the rate

• Halves the rate

• No effect

What is the relationship between concentration of reactants and rate of reaction?

• Exponential relationship

• Inversely proportional

• Directly proportional

• No relationship

What is the role of a catalyst in a chemical reaction?

• Increase temperature

• Increase activation energy

• Lower activation energy

• Decrease concentration

In the rate equation Rate = k[A]^m[B]^n, what do m and n represent?

• Equilibrium constants

• Rate constants

• Orders of the reaction

• Concentrations of reactants