Question

a compound that releases hydroxide ions in solution would most likely have which
○ it would react with lipids to form soap.
○ it would react with metals to form a salt and water.
○ it would react with metals to form hydrogen gas.
○ it would react with carbonates to form carbon dioxide.

Explanation:

A compound that releases hydroxide ions ($\text{OH}^-$) in solution is a base.

1. Bases react with lipids (fats/oils) in saponification to form soap and glycerol.
2. Reactions that form salt + water with metals, hydrogen gas with metals, or carbon dioxide with carbonates are characteristic of acids, not bases.

Answer:

A. It would react with lipids to form soap.