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The entropy change in the isothermal rev...

The entropy change in the isothermal reversible expansion of 2 moles of an ideal gas from 10 to 100 L at 300 K is

A

42.3 `JK^(-1)`

B

35.8 `JK^(-1)`

C

38.3 `JK^(-1)`

D

323 `JK^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta S= (nRT)/(T)"ln " (v_(2))/(v_(1))`
`n= R" ln " (v_(2))/(v_(1))= 2.303 n R "log" (v_(2))/(v_(1))`
`= 2.303 xx 2 xx 8.314 xx 1 = 38.3J/K`.
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