Equilibrium Question 227

Question: Ksp value of Al,(OH)3 and Zn,(OH)2 are 8.5×1023 and 1.8×1014 respectively. If NH4OH is added in a solution of Al3+ and Zn2+, which will precipitate earlier [MP PMT 1989; CPMT 1989]

Options:

A) Al,(OH)3

B) Zn,(OH)2

C) Both together

D) None

Show Answer

Answer:

Correct Answer: A

Solution:

Solubility of Al(OH)3 is lesser than Zn(OH)2 .



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