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NEETChemistryIonic Equilibrium

What is the maximum concentration of equimolar solutions of ferrous sulphate and sodium sulphide so that when mixed in equal volumes, there is no precipitation of iron sulphide? (For iron sulphide, Ksp = 6.3 × 10 -18 ).

Options

  1. A5.0 × 10 -9 M
  2. B3.8 × 10 -10 M
  3. C1.9 × 10 -10 M
  4. D9.5 × 10 -10 M

Correct answer

A. 5.0 × 10 -9 M

Step-by-step solution

Correct Option is : (A) 5.0 × 10 -9 M

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