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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

The solubility product of A g 2 C r O 4 is 32 × 10 - 12 . What is the concentration of C r O 4 - ions in that solution?

Options

  1. A2 × 10 - 4 M
  2. B16 × 10 - 4 M
  3. C8 × 10 - 4 M
  4. D8 × 10 - 8 M

Correct answer

A. 2 × 10 - 4 M

Step-by-step solution

A ⁡ g ⁡ 2 C ⁡ r ⁡ O ⁡ 4 → 2 A ⁡ g ⁡ + + C ⁡ r ⁡ O ⁡ 4 2 - s ⁡ 2 s ⁡ s ⁡ K s p = 2 s 2 s = 4 s 2 s = K s p 4 1 3 = 32 × 10 - 12 4 1 3 = 2 × 10 - 4 M

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