Question

The dissolution of \( Al(OH)_3 \) by a solution of NaOH results in the formation of

• A. \( [Al(H_2O)_4](OH)_2^+ \)
• B. \( [Al(H_2O)_6](OH)_3^+ \)
• C. \( [Al(H_2O)_3](OH)_3^+ \)
• D. \( [Al(H_2O)_6](OH)_2^+ \)

Hint:

Aluminium hydroxide reacts with NaOH to form soluble complexes involving water ligands.

Answer 1

The Correct Option is A

When \( Al(OH)_3 \) reacts with NaOH, it forms a complex ion \( [Al(H_2O)_4](OH)_2^+ \), as the hydroxide ions and water molecules coordinate with the aluminium ion.