Question

Consider the following chemical equation. aZn + bHNO3 - cZn(NO3)2 + dH20 + ENZO On balancing​

Answer 1

Answer:





The unbalanced redox equation is as follows:

Zn+HNO3→4Zn(NO3)2+N2O+H2O

Balance all atoms other than H and O.

4Zn+10HNO3→4Zn(NO3)2+N2O+H2O

The oxidation number of Zn changes from 0 to +2. The change in the oxidation number of one Zn atom is +2. For 4 Zn atoms, the total change in the oxidation number is 8.

The oxidation number of N changes from +5 to +1. The change in the oxidation number of one N atom is 4. For 2 N atoms, the total change in the oxidation number is 8.

The increase in the oxidation number is balanced with a decrease in the oxidation number O atoms are balanced adding 4 water molecules on RHS.

4Zn+10HNO3→4Zn(NO3)2+N2O+5H2O

Hydrogen atoms are balanced. 

This is the balanced chemical equation.