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Q.

A first order reaction is 75% completed in 100 minutes. How long time will it take for its 87.5% completion?

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a

150 min

b

200 min

c

175 min

d

125 min

answer is B.

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Detailed Solution

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t75%=2t50%=100 t50%=50min t87.5%=3t50%=3(50)=150min

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