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75% of a first order reaction complete i...

75% of a first order reaction complete in 4h . 87.5% of the same reaction completes in-

A

6 h

B

12 h

C

8 h

D

2 h

Text Solution

Verified by Experts

The correct Answer is:
A
Using the relation , `t_(87.5%)=(3)/(2)t_(75%)`
`t_(87.5%)=(3)/(2)xx(4)/(1) = 6h `
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