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Question

For a reaction $$I^-+OCl^- \rightarrow IO^- +Cl^-$$, in an aqueous medium, the rate of the reaction is given by $$\dfrac{d[IO^-]}{dt} = K\dfrac{[I^-][OCl^-]}{[OH^-]}$$. The overall order of the reaction is:


A
-1
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B
1
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C
0
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D
2
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Solution

The correct option is B 1
The expression for the rate of the reaction is $$\dfrac{d[IO^-]}{dt} = K\dfrac{[I^-][OCl^-]}{[OH^-]}$$.
The order with respect to $$I^-,\ OCl^-$$ and $$OH^-$$ are 1, 1 and -1 respectively.
The overall order of the reaction is $$1+1-1=1$$.

Option B is correct.

Chemistry
NCERT
Standard XII

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