Q. Zn reacts with dilute HNO3,Conc.HNO3 and very dilute HNO3. The oxidation number of nitrogen changes from HNO3 are a,b,c in product X,Y,Z respectively. What is the value of (a+b+c) is
(a) Zn+HNO3→Zn(NO3)2+"X"+H2O
dilute (20%)
(b) Zn+HNO3→Zn(NO3)2+"Y"+H2O
Conc (70%)
(a) Zn+HNO3→Zn(NO3)2+"Z"+H2O
very dilute (6%)