Which of the following has `DeltaS^(@)` greater than zero

Options

A. `CaO_(s) + CO_(2(g)) iff CaCO_(3(s))`
B. `NaCl_(aq) iff NaCl_(s)`
C. `NaNO_3(s) iff Na^(aq)^(+) NO_(aq)^(-)`
D. `N_(2(g)) + 3H_(2(g)) iff 2NH_(3(g))`

Answer

C

Explanation

Here, the number of product species is greater than the number of reactant species. So it leads to positive value of entropy.