Review Collision Theory and Rate Laws

horizontal line on a rate vs time graph

change in [A] over change in t

data does not include rate

independent variable is 1/[A]

k=1/s

data includes rate and concentration

plot is ln[A] vs t

plot is [A] vs t

negative because of decreasing [A]

plot is 1/[A] vs t

only integrated line with a +k

k=M^-1s^-1

[A] does not affect rate

concentration changes the same as rate

rate=k[B]²

rate=k[A]

[A]_t = -kt + [A]₀

ln[A]_t = -kt ln[A]₀

rate=k

1/[A]_t = kt + 1/[A]_t

False

True

True

True

False

rate=k[A][B]

dependent variable: 1/[A] for integrated rate law

rate=k

k=M/s

dependent variable: [A} for integrated rate law

k=1/s

dependent variable: ln[A] for integrated rate law

k=1/Ms

rate=k[A]

3

27

4

6

9

log [HI] vs time

1/[HI] vs time

[HI]² vs time

[HI] vs time

ln[HI] vs time

R=k[NH₃]

R=k[BF₃]²[NH₃]

R=k[BF₃][NH₃]

R=k[BF₃][NH₃]²

Plot ln [X] versus time and determine the magnitude of the slope.

Plot 1/[X] versus time and determine the magnitude of

the slope.

Run another trial of the experiment with a different initial concentration, plot the data on the same graph, and see where the curves intersect.