Which one of the following has S^o greater than zero - Vidyadip

MCQ

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

A
$CaO + C{O_2}(g)$ $ \rightleftharpoons $ $CaC{O_3}(s)$
B
$NaCl\,(aq)$ $ \rightleftharpoons $ $NaCl(s)$
✓
$NaN{O_3}(s)$ $ \rightleftharpoons $ $N{a^ + }(aq) + NO_3^ - (aq)$
D
${N_2}(g) + 3{H_2}(g)$ $ \rightleftharpoons $ $2N{H_3}(g)$

✓

Answer

Correct option: C.

$NaN{O_3}(s)$ $ \rightleftharpoons $ $N{a^ + }(aq) + NO_3^ - (aq)$

(c) $NaN{O_3}$ is a solid, which is converted to liquid ions.

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