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How much time will be taken for 20 gm to...

How much time will be taken for 20 gm to reduce 5 g ? [`R=2xx10^(-3)s^(-1)` (I order reaction)] [log4=0.6021]

A

`693.1 s`

B

`693.1 s^(-1)`

C

`6.931 s`

D

`6.931 s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`t=(2.303)/(R )"log"([A_(0)])/([A_(t)])=(2.303)/(2xx10^(-3))"log"([20])/([5])`
`= 693.1 S`
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