Factors Affecting Reaction Rate
Chemistry ⇒ Chemical Kinetics and Equilibrium
Factors Affecting Reaction Rate starts at 10 and continues till grade 12.
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See sample questions for grade 12
A reaction between a gas and a solid is found to proceed faster when the solid is finely powdered. Explain why.
A reaction between hydrogen and chlorine is carried out in the presence of light. What role does light play in this reaction?
A reaction has a rate constant k = 0.02 s-1 at 300 K and k = 0.08 s-1 at 320 K. What factor is responsible for the increase in k?
A reaction is carried out at 25°C and then at 35°C. The rate constant increases. What factor is responsible for this change?
A reaction between a gas and a solid is found to proceed faster when the solid is finely powdered. Explain why.
A reaction between hydrogen and chlorine is carried out in the presence of light. What role does light play in this reaction?
A reaction has a rate constant k = 0.02 s-1 at 300 K and k = 0.08 s-1 at 320 K. What factor is responsible for the increase in k?
A reaction is carried out at 25°C and then at 35°C. The rate constant increases. What factor is responsible for this change?
Which factor is most likely to affect the rate of a reaction between two gases?
(1) Surface area
(2) Pressure
(3) Color
(4) Odor
Which of the following does NOT affect the rate of a reaction?
(1) Nature of reactants
(2) Concentration
(3) Pressure
(4) Volume of the container (for solids only)
Which of the following factors affects the rate of a reaction but not the equilibrium position?
(1) Temperature
(2) Catalyst
(3) Concentration
(4) Pressure
Which of the following factors does NOT affect the rate of a chemical reaction?
(1) Temperature
(2) Pressure
(3) Color of reactants
(4) Concentration of reactants
For a gaseous reaction, increasing the pressure will _______ the rate if the number of moles of reactants is greater than the number of moles of products.
Increasing the concentration of reactants generally _______ the rate of reaction.
Increasing the surface area of a solid reactant will _______ the rate of reaction.
The minimum energy required for a reaction to occur is called _______.
True or False: A catalyst increases the activation energy of a reaction.
True or False: All reactions speed up when the temperature is increased.
True or False: Catalysts change the position of equilibrium in a chemical reaction.
True or False: Increasing the pressure of a reaction involving only solids will significantly affect the reaction rate.
