Integrated Rate Laws

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AP Chemistry › Integrated Rate Laws

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1

The half life of a first order reaction is 1.5 hours. What is the rate constant of this reaction?

1.5

0

0.75

0

0.52

0

0.46

CORRECT

0.21

0

Explanation

2

Cyclopentane is unstable and decomposes by a first order reaction. The rate constant for this reaction is 9.5 s-1. What is the half life of the reaction?

0.0314 seconds

0

0.0582 seconds

0

0.0614 seconds

0

0.0729 second

CORRECT

0.132 seconds

0

Explanation

3

The rate constant for a second-order reaction is 0.15 M-1s-1. If the initial concentration of the reactant is 0.30 M, how long does it take for the concentration to decrease to 0.15 M?

11.1 seconds

0

22.2 seconds

CORRECT

44.4 second

0

88.8 seconds

0

253 second

0

Explanation

4

A compound decomposes by a first-order process. If 25.0% of the compound decomposes in 60 minutes, the half-life of the compound is?

65 minutes

0

120 minutes

0

145 minutes

CORRECT

180 minutes

0

198 minutes

0

Explanation

5

02

Based on the figure above, what is the order of reaction?

First order

CORRECT

Second Order

0

Third Order

0

Zero Order

0

Squared Order

0

Explanation

For a first order reaction, the ln \[A\]t is linear with t.