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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

The solubility products of A l ( O H ) 3 and Z n ( O H ) 2 are 8.5 × 1 0 - 23 and 1.8 × 1 0 - 14 respectively. If N H 4 O H is added to a solution containing A l 3 + and Z n 2 + ions, then substance precipitated first is:

Options

  1. AA l ( O H ) 3
  2. BZ n ( O H ) 2
  3. CBoth together
  4. DNone at all

Correct answer

A. A l ( O H ) 3

Step-by-step solution

ppt occurs when ionic product is greater than solubility product. Solubility of A l ( O H ) 3 is lesser than Z n ( O H ) 2

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