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Two moles of ideal gas at 27^(@)C temper...

Two moles of ideal gas at `27^(@)C` temperature is expanded reversibly from 2 litre to 20 liter. Find entropy change `(R=2cal//molK)` .

A

zero

B

`9.2`

C

`92.2`

D

`5`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaS=2.303nR"log"(V_(2))/(V_(1))`
`=2.303xx2xx2"log"(20)/(2)`
`=9.2`
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