2 mol of an ideal gas at `27^(@)C` temperature is expanded reversibly from `2L` to `20L`. Findk entropy change `(R = 2 cal mol^(-1) K^(-1))`A. 92.1B. 0C. 4D. 9.2

2 mol of an ideal gas at `27^(@)C` temperature is expanded reversibly

1.	2 mol of an ideal gas at `27^(@)C` temperature is expanded reversibly from `2L` to `20L`. Findk entropy change `(R = 2 cal mol^(-1) K^(-1))`A. 92.1B. 0C. 4D. 9.2
Answer» Correct Answer - D `Delta S` for the isothermal reversible expansion of an ideal gas is given as `Delta S = 2.303 nR log ((V_(2))/(V_(1)))` `= (2.303) (2) (2) "log" (20)/(2)` `= (9.212) log 10` `= 9.2 cal K^(-1) mol^(-1) (log 10 = 1)`

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2 mol of an ideal gas at `27^(@)C` temperature is expanded reversibly from `2L` to `20L`. Findk entropy change `(R = 2 cal mol^(-1) K^(-1))`A. 92.1B. 0C. 4D. 9.2

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