A solution of ferric chloride in water is acidic to litmus due to:

• A. Hydrolysis
• B. Decomposition
• C. Electrolysis
• D. Condensation

The acidity of a ferric chloride solution in water can be attributed to its hydrolysis. When ferric chloride (FeCl3) dissolves in water, it reacts with water molecules, leading to the formation of hydronium ions (H3O+), which makes the solution acidic.

Why Hydrolysis Matters

During hydrolysis, the ferric ions (Fe3+) interact with water, resulting in the release of protons (H+). This increase in hydrogen ions is what causes the solution to turn acidic.

Key Points

• Ferric Chloride Formula: FeCl3
• Reaction with Water: FeCl3 + 3H2O → Fe(OH)3 + 3HCl
• Result: Formation of HCl contributes to acidity

Therefore, the correct answer is A. Hydrolysis.