The leachate of a certain plant ash is used in local soap making because it contains
- sodium chloride and potassium hydroxide
-
sodium hydroxide
- potassium hydroxide
- soluble carbonates and hydrogen carbonates
The correct answer is: B
Explanation
Lye is the most commonly used alkali for soap-making. The chemical name for lye is sodium hydroxide. (A lye is a metal hydroxide traditionally obtained by leaching ashes (containing largely potassium carbonate or "potash"), or a strong alkali which is highly soluble in water producing caustic basic solutions.)