Which statements are correct for a process involving an ideal gas?

Options

A. `(Delta S)_("Isothermal, sys") = 2.303 n R "long" (V_(f))/(V_(i))`
B. `(Delta S)_("adiabatic, rev") = 0`
C. `(Delta S)_("Total, irr") gt 0`
D. `(Delta S)_("Total, adiabatic, rev") = 0`

Answer

A, B, C, D

Explanation

`Delta S = n C_(v) "ln" (T_(2))/(T_(1)) + nR "ln" (V_(2))/(V_(1))`
Isothermal `Delta S = nC_(V) "ln" (T_(2))/(T_(1)) + nR "ln" (V_(2))/(V_(1))`
Adiabatic, rev `rArr q_("rev") = 0 rArr Delta S = 0`
`rArr Delta S_("surr") = 0 rArr Delta S_("total") = 0`
for irreversible, `Delta S_("total") gt 0`