26. Reaction Kinetics

Question 1

Explain what is meant by order of reaction.

Answer 1

The power to which the concentration of that reactant is raised in the rate equation

Question 2

What is the rate of reaction?

Answer 2

The change in the amount of concentration of a reactant or product per unit time

Question 3

Explain what is meant by overall order of reaction

Answer 3

The total of the power to which a concentration of a reactant is raised in the rate equation

Question 4

Explain what is meant by rate constant

Answer 4

The constant linking rate of reaction and the concentration of reactants

Question 5

Explain what is meant by half life

Answer 5

The amount of time taken for the concentration of the reactants to halve

Question 6

Explain what is meant by the rate determining step

Answer 6

The slowest step in the reaction

Question 7

Explain what is meant by an intermediate

Answer 7

The substance formed between the reactants and the product during a chemical reaction

Question 8

Describe the mode of action of a heterogeneous catalyst

Answer 8

Reactants adsorb to surface of catalyst
Bonds in reactant weaken
Reaction occurs and the products are desorbed