Question

Question: Answered & Verified by Expert

Which one of the following has $\Delta S^{\circ}$ greater than zero?

ChemistryThermodynamics (C)AIIMSAIIMS 2003

Options:

A $\mathrm{CaO}$$(s)+\mathrm{CO}_2$$(g) \rightleftharpoons \mathrm{CaCO}_3$$(s)$
B $\mathrm{NaCl}_{(a q)} \rightleftharpoons \mathrm{NaCl}_{(s)}$
C $\mathrm{NaNO}_{3(s)} \rightleftharpoons \mathrm{Na}_{(a q)}^{+}+\mathrm{NO}_3^{-}{ }_{(a q)}$
D $\mathrm{N}_{2(g)}+3 \mathrm{H}_{2(\mathrm{~g})} \rightleftharpoons 2 \mathrm{NH}_{3(g)}$