Question

The data below show the concentration of ABversus time for the following reaction: AB(g)→A(g)+B(g) Time (s)...

The data below show the concentration of ABversus time for the following reaction:
AB(g)→A(g)+B(g)

Time (s) [AB] (M)
0 0.950
50 0.459
100 0.302
150 0.225
200 0.180
250 0.149
300 0.128
350 0.112
400 0.0994
450 0.0894
500 0.0812

Determine the order of the reaction.

Science   Chemistry   
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Homework Answers

Answer #1

Solution

Easiest way to determine the order of the reaction in this case is to plot the graph concentration of [AB] to the time in seconds.

Refer attached excel file.

Conclusion:

We don’t have any data about the rate of reaction. So, we can only assume about the order of the reaction.

As shown in both graphs, we can say that it is second order reaction as log[AB] vs Time did not produce a straight line. It also means that there are some factors such as concentration of product which are affecting the rate of reaction. Underlining the fact that it is Second order reaction.

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