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The time required for a first order to c...

The time required for a first order to complee `90%` is t . What is the time reqauired to complete `99%` of the same reaction ?

A

2t

B

3t

C

t

D

4t

Text Solution

Verified by Experts

The correct Answer is:
A
`k=(2.303)/(t)log.(100)/((100-90))=(2.303)/(t)" "....(i)`
`k=(2.303)/(t')log.(100)/((100-99))" "....(ii)`
From eqs. (i) and (ii)
`k=(2.303)/(t)=(2.303)/(t)xx2`
`t'=2t`
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