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 `100dm^(3)` at `27^(@)C` is

Options

A. 35.8 J/mol/K
B. 32.3J/mol/K
C. 42.3J/mol/K
D. 38.3 J/mol/K

Answer

D

Explanation

For isothermal reversible process, of an ideal gas
` Delta S = 2.303 nR log (( V _ 2 )/( V _ 1 )) `
` = 2 .303 xx 2 xx 8.314 xx log ((100)/(10)) `
` = 38.3 J//mol//K`