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Q.

For the reaction system :  2NO(g)+O2(g)→2NO2(g) volume is suddenly reduced to half its value by increasing the pressure on it.If the reaction is of first order with respect to O2 and second order with respect to NO, the rate of reaction will be _____?

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a

Diminish to one - forth of its initial value.

b

Diminish to one - eighth of its initial value

c

Initial to eight times of its initial value

d

Initial to four times of its initial value

answer is C.

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Detailed Solution

The rate law of the reaction is Rate =k[O2][NO]2.when volume is reduced to half , concentration becomes double the initial concentration, so the rate law becomesRate =k[2O2][2NO]2 = 8k [O2] [NO]2
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