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Q.

The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 dm3 to volume of 100 dm3 at 270C is

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a

38.3J mol−1k−1

b

35.8J mol−1k−1

c

32.3J mol−1k−1

d

42.3J mol−1k−1

answer is A.

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Detailed Solution

ΔS=2.303nR logV2V1=2.303×2×8.134log10010=38.294 J mol−1k−1
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