For the reaction 2NO(g)+2H2(g)→N2(g)+2H2O(g)
The rate expression can be written in the following ways d[N2]dt=k1[NO][H2]d[H2O]dt=k[NO][H2]−d[NO]dt=k′1[NO][H2]−d[H2]dt=k′′1[NO][H2]
The relationship betyween k,k1,k′1 and k′′1
A
k=k1=k′1=k′′1
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B
k=2k1=k′1=k′′1
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C
k=k1=2k′1=k′′1
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D
k=k1=k′1=2k′′1
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Solution
The correct option is Bk=2k1=k′1=k′′1 For the reaction 2NO(g)+2H2(g)→N2(g)+2H2O(g)
The rate expression can be written in the following ways d[N2]dt=k1[NO][H2]d[H2O]dt=k[NO][H2]−d[NO]dt=k′1[NO][H2]−d[H2]dt=k′′1[NO][H2]
The rate of reaction is r=−12d[NO]dt=−12d[H2]dt=d[N2]dt=12d[H2O]dt⇒12k′1[NO][H2]=12k′′1[NO][H2]=k1[NO][H2]=12k[NO][H2]
Comparing the above equations, we get k′1=2k1k′′1=2k1k=2k1