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QUESTION 6 The first-order decomposition of hydrogen peroxide occurs according to the equation 2 H2O2(aq) -->...

QUESTION 6

The first-order decomposition of hydrogen peroxide occurs according to the equation

2 H2O2(aq) --> 2 H2O(l) + O2(g)

Using data from a concentration-time study of this reaction, which plot will produce a straight line?

[H2O2] versus time

[H2O2]2 versus time

1 / [H2O2] versus time

ln[H2O2] versus time
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Homework Answers

Answer #1

integrated rate laws:

integrated rate law for 2nd order reaction:

1/[A]o = 1/[A] - k*t

so, for 2nd order reaction, 1/[A] vs t will be straight line

integrated rate law for 1st order reaction:

ln [A] = –kt + ln [A]o

So, for 1st order reaction, ln[A] vs t will be straight line

integrated rate law for zero order reaction:

[A] = [A]o – k*t

So, for zero order reaction, [A] vs t will be straight line

Since this is 1st order reaction,

ln[A] vs t will be straight line

Answer: ln[H2O2] vs time

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