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Questions and Answers

What is the role of manganese dioxide in the decomposition of hydrogen peroxide?

To act as a catalyst and speed up the reaction (correct)

To change the physical state of the reactants

To increase the activation energy of the reaction

To decrease the concentration of the reactants

What type of catalysis occurs when the catalyst is in the same physical phase as the reactants?

Homogeneous catalysis (correct)

Autocatalysis

Heterogeneous catalysis

Intermediate formation theory

What is the minimum energy required for colliding particles to result in a reaction?

Reaction rate

Activation energy (correct)

Temperature

Concentration of reactants

What is the term for a product of a reaction becoming a catalyst for the same reaction?

Autocatalysis (D) Signup and view all the answers

What is the term for the rate at a particular point in time during a reaction?

Instantaneous rate (D) Signup and view all the answers

What is the theory that involves homogeneous catalysis and proposes the formation of an intermediate complex?

Intermediate formation theory (B) Signup and view all the answers

What is the primary function of the catalyst in a catalytic reaction?

To lower the energy barrier of the reaction (C) Signup and view all the answers

What is the term for the accumulation of one substance at the surface of another?

Adsorption (B) Signup and view all the answers

What is the effect of an increase of 10K on the reaction mixture?

A small increase in the number of collisions (D) Signup and view all the answers

What is the term for particles that block active sites on the catalyst?

Catalytic poisons (B) Signup and view all the answers

How does the fineness of the catalyst affect the reaction rate?

A more finely divided catalyst increases the reaction rate (A) Signup and view all the answers

What is the relationship between concentration and rate of reaction?

Concentration is directly proportional to rate (D) Signup and view all the answers