Question

Write balanced chemical equations for each of the following :
(i) Cl₂ + KBr → KCl + Br₂
(ii) Fe + CuSO₄ → FeSO₄ + Cu
(iii) Al + NaOH + H₂O → NaAlO₂ + H₂

Answer 1

Balance the equation

Explanation:

(i) Cl₂ + 2KBr → 2KCl + Br₂

On the left-hand side, we have:   2 Cl, 2 K, and 1 Br

On the right-hand side, we have: 2 Cl, 2 K, and 1 Br

The equation is now balanced.

(ii) Fe + CuSO₄ → FeSO₄ + Cu

On the left-hand side, we have:   2 H, 4 O, 1 S and 1 Fe

On the right-hand side, we have: 2 H, 4 O, 1 S and 1 Fe

The equation is already balanced, so there was no need to do anything further.

(iii) 2Al + 2NaOH + 2H₂O → 2NaAlO₂ + 3H₂

On the left-hand side, we have:  2 Al, 2 Na, 4 O and 6 H

On the right-hand side, we have: 2 Al, 2 Na, 4 O and 6 H

The equation is now balanced.