In which reaction there will be increase in entropyA. `Na(s)+H_(2)O(l)rarrNaOH(l) + (1)/(2)H_(2)(g)`B. `Ag^(+)(aq)+Cl^(-)(aq)rarrAgCl(s)`C. `H_(2)(g)+(1)/(2)O_(2)(g)rarrH_(2)O(l)`D. `Cu^(2+)(aq)+4NH_(3)(g) rarr[Cu(NH_(3))_(4)]^(2+)(aq)`

In which reaction there will be increase in entropyA. `Na(s)+H_(2)O(l)

1.	In which reaction there will be increase in entropyA. `Na(s)+H_(2)O(l)rarrNaOH(l) + (1)/(2)H_(2)(g)`B. `Ag^(+)(aq)+Cl^(-)(aq)rarrAgCl(s)`C. `H_(2)(g)+(1)/(2)O_(2)(g)rarrH_(2)O(l)`D. `Cu^(2+)(aq)+4NH_(3)(g) rarr[Cu(NH_(3))_(4)]^(2+)(aq)`
Answer» Correct Answer - A In reaction (a) Na (s) reacts with `H_(2)O(l)` to give NaOH(l) and `(1)/(2)H_(2)(g)`. Since, the entropy of a gas is higher than that of liquid and the entropy of liquid is higher than that of solid, therefore, the change in entropy of this reaction increases.

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