Reaction, 3ClO−→ClO−3+2Cl occurs in following two steps. I. ClO−+ClO−K1−→ClO−2+Cl−(Slow step) II. ClO+2ClO−k2−→ClO−3+Cl− (Fast step) Then, the rate of given reaction is:
A
k1[ClO−]
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B
k1[ClO−]2
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C
k2[ClO−2][ClO−]
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D
k2[ClO−]3
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Solution
The correct option is Bk1[ClO−]2 I. ClO−+ClO−K3→ClO−2+Cl−(Slow step) II. ClO+2ClO−k2→ClO−3+Cl− (Fast step) Since, slowest step is the rate determining step. so the rate of reaction =k1[ClO−]2.