Question Detail
Question
When vanadium (II) compounds are dissolved in water, the following equilibrium is established: V²⁺ + H₂O ⇌ V³⁺ + ½H₂ + OH⁻. What would alter the composition of the equilibrium mixture in favour of V²⁺ ions?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Adding an acid will react with OH⁻, removing it from the right side. According to Le Chatelier's principle, the equilibrium shifts left to produce more V²⁺.
Hint
Identify which change removes a product or adds a reactant to shift equilibrium toward V²⁺.