Chemistry · Reaction Kinetics
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Reaction that follows third order kinetics is:
- A
Decomposition of nitrogen dioxide
- B
Decomposition of hydrogen iodide
- C
Gas phase oxidation of nitric oxide
- D
Formation of hydrogen iodide
Option C is correct as gas phase oxidation of nitric oxide is a third order reaction. The reaction is as follows:
2NO(g) + O2(g) --> 2NO2(g)
This reaction is second order with respect to NO and first order with respect to O2, making the overall order to be 3.
Option A and D are second order reaction and option B is a zero order reeaction.
Decomposition of NO2 is a second order reaction.
2NO2(g) --> 2NO(g) + O2(g)
Decomposition of Hydrogen iodide is a zero order reaction.
2HI(g) --> H2(g) + I2(g)
Gas phase oxidation of nitric oxide is a third order reaction. The reaction is as follows:
2NO(g) + O2(g) --> 2NO2(g)
This reaction is second order with respect to NO and first order with respect to O2, making the overall order to be 3.
Formation of hydrogen iodide is a second order reaction.
H2(g) + I2(g) --> 2HI(g)
Tagged under Chemistry · Reaction Kinetics · 2023