20.79. Many gas-phase reactions require some inert body, usually represented as M, to absorb or supply energy in a col- lision in order to proceed. In the spontaneous decomposition of ozone, O3, we can suggest the mechanism O3 + M – O,* + M RDS 03* O2 + •O- -0- + 03 – 202 for the overall reaction 203 → 30, In the mechanism, O3* refers to an ozone molecule in some energetically excited state that can react spontaneously to form O, and O atoms. Determine the rate law of the proposed mechanism in terms of O3 and M, where the second step is the rate-determining step. Will adding an inert gas like Ar to a sample of ozone increase or decrease the rate of the reaction?

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20.79. Many gas-phase reactions require some inert body,
usually represented as M, to absorb or supply energy in a col-
lision in order to proceed. In the spontaneous decomposition
of ozone, O3, we can suggest the mechanism
O3 + M –
O,* + M
RDS
03*
O2 + •O-
-0- + 03 –
202
for the overall reaction
203 → 30,
In the mechanism, O3* refers to an ozone molecule in some
energetically excited state that can react spontaneously to
form O, and O atoms. Determine the rate law of the proposed
mechanism in terms of O3 and M, where the second step is
the rate-determining step. Will adding an inert gas like Ar to a
sample of ozone increase or decrease the rate of the reaction?
Transcribed Image Text:20.79. Many gas-phase reactions require some inert body, usually represented as M, to absorb or supply energy in a col- lision in order to proceed. In the spontaneous decomposition of ozone, O3, we can suggest the mechanism O3 + M – O,* + M RDS 03* O2 + •O- -0- + 03 – 202 for the overall reaction 203 → 30, In the mechanism, O3* refers to an ozone molecule in some energetically excited state that can react spontaneously to form O, and O atoms. Determine the rate law of the proposed mechanism in terms of O3 and M, where the second step is the rate-determining step. Will adding an inert gas like Ar to a sample of ozone increase or decrease the rate of the reaction?
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