Question

An alkali which completely dissociates into ions is ______.

Options

• ammonium hydroxide

• calcium hydroxide

• lithium hydroxide

Answer 1

An alkali which completely dissociates into ions is lithium hydroxide.

Explanation:

Lithium hydroxide (LiOH) is an alkali metal hydroxide belonging to Group 1, making it a strong base that completely dissociates into lithium (Li⁺) and hydroxide (OH⁻) ions in an aqueous solution. In contrast, ammonium hydroxide (NH₄OH) is a weak alkali that only partially dissociates into ions. While calcium hydroxide (Ca(OH)₂) is a strong base by nature, it has very low solubility in water, which limits its ability to produce a high concentration of free ions compared to lithium hydroxide