Question

The electrolyte used in H₂ - O₂ fuel cell is ______.

Options

• aqueous KCl

• aqueous KOH

• aqueous HCl

• aqueous KNO₃

Answer 1

The electrolyte used in H₂ - O₂ fuel cell is aqueous KOH.

Explanation:

In an H₂ - O₂ fuel cell, aqueous potassium hydroxide (KOH) is used as the electrolyte. It provides an alkaline medium that allows the movement of OH⁻ ions between the electrodes, helping in the electrochemical reactions to produce electricity.