Choose the correct statements:

Options

A. Temperature, enthalpy and entropy are state functions
B. For both reversible and irreversible isothermal expansion of an ideal gas, change in internal energy and enthalpy is zero
C. For a reaction in which `Delta n_(g) = 0`, entropy change is not always zero
D. The entropy change associated with reversible isothermal expansion of an ideal gas is equal to 2.303 R `"log"_(10) (P_(1))/(P_(2))`

Answer

A, B, C, D

Explanation

(a) T, H, S are state functions
(b) `Delta T = 0 rArr Delta E = Delta H = 0`
(c ) even if `Delta n_(g) = 0, S` may change
(d) Reversible isothermal, `Delta S = (q_("rev"))/(T) = R "ln" (V_(2))/(V_(1)) = R "ln " (P_(1))/(P_(2))`