Equilibrium Question 26

Question: Aqueous solution of $ CuSO_4.5H_2O $ changes blue litmus paper to red due to [CPMT 1979; MP PMT 1989]

Options:

A) Presence of $ C{u^{++}} $ ions

B) Presence of $ SO_4^{–} $ ions

C) Hydrolysis taking place

D) Reduction taking place

Show Answer

Answer:

Correct Answer: C

Solution:

Hydrolysis of $ C{u^{2+}} $ produces $ {H^{+}} $ ions in solution. $ C{u^{2+}}+2H_2O\to Cu{{(OH)}_2}+2{H^{+}} $



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