Answer:
The
reaction of Zn granules with
(i) dilute
H2SO4
Zn(s)
+ H2SO4(aq) ZnSO4(aq)
+ H2(g)
(ii) dilute
HCl
Zn(s)
+ 2HCl(aq) ZnCl2(aq) + H2(g)
(iii)
dilute HNO3
Reaction with dilute HNOg is different as compared to other
acids because nitric acid is an oxidizing agent and it oxidizes Hg gas evolved
to H2O.
4Zn(s) + 10HNO3(aq) 4Zn(NO3)2(aq)
+ 5H2O(l) + N2O(g)
(iv) NaCI
solution
Zn(s)
+ NaCl(aq) No reaction
(v) NaOH solution
Zn(s) + 2NaOH(aq) Na2ZnO2(aq)+H2(g)
Sodium
zincate
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