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InterviewSolution
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The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of`10 dm^(3)` to a volume of 100 `dm^(3)` at `27^(@)` is `:`A. `35.8 J mol^(-1)K^(-1)`B. ` 32.3J mol^(-1) K^(-1)`C. ` 42.3 J mol^(-1) K^(-1)`D. `38.3 J mol^(-1) K^(-1)` |
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Answer» Correct Answer - C For isothermal reversible expansion of an ideal gas, `DeltaS = nR ln. (V_(2))/(V_(1))=2 xx 8.314 xx 2.303 log. ( 100)/(10)` `= 38.3 J mol^(-1) K^(-1)` |
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