Question

Statement 1: Aluminium hydroxide is a tri-acidic base.
Statement 2: Tri-acidic base furnishes more hydroxyl ions than a monoacidic base in an aqueous solution.

• A. Only statement 1 is correct.
• B. Both statement 1 and statement 2 are incorrect.
• C. Only statement 2 is correct.
• D. Both statement 1 and statement 2 are correct.

Answer 1

The correct option is D Both statement 1 and statement 2 are correct.

• $\mathrm{Al}{\left(\mathrm{OH}\right)}_3$ is a triacidic base and its acidity is 3 as it gives out 3 hydroxide ions in solution.
• Thereforre, statement 1 is correct.
• Monoacidic bases furnish 1 hydroxide ions in solution whereas triacidic bases furnish 3 hydroxide ions in solution,
• So, statement 2 is also correct.
• Therefore, the correct answer is option A.