Question

Which of the following equations is balanced in a basic solution? A. ClO-(aq) + 2H-(aq) + 2e- Cl-(aq) + H2O(l) B. ClO-(aq) + H2O(l) Cl-(aq) + 2OH-(aq) C. ClO-(aq) + 2H-(aq) Cl-(aq) + H2O(l) D. ClO-(aq) + H2O(l) + 2e- Cl-(aq) + 2OH-(aq)

Answer 1

Answer : The correct option is, (D)
`ClO^-(aq)+H_2O(l)+2e^-\rightarrow Cl^-(aq)+2OH^-(aq)`

Explanation :

Rules for the balanced chemical equation in basic solution are :

1. First we have to write the unbalanced chemical reaction.
2. Now balance the main atoms in the reaction.
3. Now balance the hydrogen and oxygen atoms on both the sides of the reaction.
4. If the oxygen atoms are not balanced on both the sides then adding water molecules at that side where the more number of oxygen are present.
5. If the hydrogen atoms are not balanced on both the sides then adding hydroxide ion
   `(OH^-)` at that side where the less number of hydrogen are present.
6. Now balance the charge.

The balanced chemical equation in a basic solution will be,

`ClO^-(aq)+H_2O(l)+2e^-\rightarrow Cl^-(aq)+2OH^-(aq)`

Hence, the correct option is, (D)