The leachate of a certain plant ash is used in local soap making because it contains
A. sodium chloride and potassium hydroxide B. sodium hydroxide C. potassium hydroxide D. soluble carbonates and hydrogen carbonates
Correct Answer: 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.)
