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A first order reaction takes one hour fo...

A first order reaction takes one hour for 50% completion How long will it take to reach 90% completion ?

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`t_(50%)=(0.693)/(k) therefore k =(0.693)/(60min)`
`t_(90%)=(2.303)/(k)log.(a)/(a-x)=(2.303xx60)/(0.693)log.(a)/(a-0.9a)`
= 199.4min
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CHHAYA PUBLICATION-CHEMICAL KINETICS-EXERCISE (NUMERICAL PROBLEMS)
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