Measuring Reaction Rates

Question 1

Average rate

Answer 1

rate when ∆t is clearly measurable

Question 2

What are the two factors that affect reaction rates?

Answer 2

changes to collision frequency/activation energy, changing A (surface area/changing phases)

Question 3

Catalysts

Answer 3

substance that increases the rate of a chemical reaction by providing an alternative pathway but is not consumed by the reaction

Question 4

Instantaneous rate

Answer 4

rate of reaction at any specific time

Question 5

Initial rate

Answer 5

instantaneous rate when the reaction starts

Question 6

Rate laws/rate equation

Answer 6

mathematical expressions that relate the rate of a chemical reaction to the concentrations of reactants

Question 7

Order of a reaction

Answer 7

the power to which a concentration must be raised to correctly calculate the rate

Question 8

Overall reaction order

Answer 8

sum of all individual orders

Question 9

k units for zeroth order reactions

Answer 9

M/s

Question 10

k units for first order reactions

Answer 10

1/s

Question 11

k units for second order reactions

Answer 11

1/Ms

Question 12

k units for third order reactions

Answer 12

1/M^2s

Question 13

Method of initial rates

Answer 13

select 2 sets of rate data where all concentrations but one are the same and set up a ratio of the 2 rates and the 2 rate laws