Chemistry: Rate Law

What are the units for rate of a chemical reaction?

m/s

What are the units for a zero-order rate law?

m/s

What are the units for a first-order rate law?

s^-1

What are the units for a second-order rate law?

m^-1s^-1

What are the units for third-order rate law?

m^-2s^-1

What is on the y-axis of a zero-order graph?

[A]

What is on the y-axis of a first-order graph?

ln[A]

What is on the y-axis of a second-order graph?

1/[A]

zero-order integrated rate law:

[A_t] = -k(t) + [A_o]

first-order integrated rate law:

ln[A_t] = k(t) + ln[A_o]

second-order integrated rate law:

1/[A_t] = -k(t) + 1/[A_o]

2 criteria for an effective collision

1) Must be enough energy for the bonds to break

2) Must be a correct orientation

4 things to speed up a reaction

1) increase concentration

2) increase temperature

3) decrease surface area

4) Increase catalyst

What is a catalyst

Speeds up chemical reactions + provides required area for reaction

What determines whether a substance is a catalyst or not?

Can speed up reaction without being changed/destroyed in the reaction