JEE Main Chemistry question
If the concentration of OH⁻ ions in the reaction Fe(OH)₃(s)⇌Fe³⁺(aq)+3OH⁻(aq) is decreased by ¼ times, then equilibrium concentration of Fe³⁺ will increase by:
Answer: (B)
Solution
Ksp=[Fe³⁺][OH⁻]³ constant. [Fe³⁺=[Fe³⁺×4³=64× old.