5.3 Concentration Changes Over Time
Determine the order of a reaction by examining graphs of [A] vs. t, ln
[A] vs. t, and 1/[A] vs. t.
- Which graph is linear for a second-order reaction?
Use the integrated rate law corresponding to the order of a reaction to
determine the value of k.
-
Use the first-order integrated rate law to calculate k from
experimental data.
Recognize that the half-life of a first-order reaction is constant.
-
Why does the half-life of a first-order reaction not depend on the
initial concentration?
Apply the half-life equation for a first-order reaction to determine k
or the half-life of a reaction, including radioactive decay.
- Calculate the half-life of a reaction with k = 0.0030 s⁻¹.