What happens when zinc granules are treated with dilute solution of H_(2)SO_(4),HCl,HNO_(3),NaClandNaOH? Also write the chemical equations if reaction occurs.

What happens when zinc granules are treated with dilute solution of H_

1.	What happens when zinc granules are treated with dilute solution of H_(2)SO_(4),HCl,HNO_(3),NaClandNaOH? Also write the chemical equations if reaction occurs.
Answer» Solution :The reaction of Zn granules with (i) DILUTE `H_(2)SO_(4)` `Zn(s)+H_(2)SO_(4)(aq)rarrZnSO_(4)(aq)+H_(2)(g)` (ii) dilute HCl `Zn(s)+2HCl(aq)rarrZnCl_(2)(aq)+H_(2)(g)` (III) dilute `HNO_(3)` Reaction with dilute `HNO_(3)` is DIFFERENT as compared to other acids because nitric acid is an oxidising agent and it oxidises `H_(2)` gas evolved to `H_(2)O`. `4Zn(s)+10HNO_(3)(aq)rarr4Zn(NO_(3))_(2)(aq)+5H_(2)O(l)+N_(2)O(g)` (iv) NaCl solution `Zn(s)+NaCl(aq)rarr"No reaction"` (v) NaOH solution `Zn(s)+2NaOH(aq)rarrunderset("Sodium zincate")(Na_(2)ZnO_(2)(aq))+H_(2)(g)`