Question

Which one of the following has ΔS⁰ greater than zero?

पर्याय

• \[\ce{CaO_{(s)} + CO2_{(g)} ⇌ CaCO3_{(s)}}\]

• \[\ce{NaCl_{(aq)} ⇌ NaCl_{(s)}}\]

• \[\ce{NaNO3_{(s)} ⇌ Na^+_{( aq)} + NO^-_{3(aq)}}\]

• \[\ce{N2_{(g)} + 3H2_{(g)} ⇌ 2NH3_{(g)}}\]

Answer 1

\[\ce{NaNO3_{(s)} ⇌ Na^+_{( aq)} + NO^-_{3(aq)}}\]

Explanation:

NaNO₃ is a solid that is broken down into liquid ions. As a result, for this reaction, ΔS⁰ is greater than zero.