A solution contains two compounds AI(OH)3 and Zn (OH)2. Solubility products for these compounds are 8.5×10-23 and 1.8 x 10-4 respectively. If NH4OH is added to this solution then

  • (A) both will precipitate at the same time
  • (B) Zn(OH)2 will precipitate first
  • (C) AI (OH)3 will precipitate first
  • (D) Zn (OH)2 or AI (OH)3 will precipitate first depending on the temperature of the solution;
Correct Answer: C

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