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Question

The rate of a gaseous reaction is given by the expression k[A]2[B]3. The volume of the reaction vessel is suddenly reduced to one half of the initial volume. The reaction rate relative to the original rate will be:

A
1/24
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B
1/32
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C
32
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D
24
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Solution

The correct option is C 32
Rate =k[A]2[B]3 ...(i)
When volume is halved, the concentration will become double.
Rate =k[2A]2[2B]3
=32k[A]2[B]3=32×original rate from (i)

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