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2 mol of an ideal gas at 27^(@)C tempera...

2 mol of an ideal gas at `27^(@)C` temperature is expanded reversibly from `2L` to `20L`. Find entropy change `(R = 2 cal mol^(-1) K^(-1))`

A

92.1

B

0

C

4

D

9.2

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaS` (enthropy change) `=2.303 nR "log"_(10)(V_(2))/(V_(1))`
`=2.303 xx 2xx2xx"log"_(10)(20)/(2)`
`=2.303 xx 2xx2xx1=9212` cal
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