Mg ( OH )₂ is precipitated when NaOH is added to a solution of Mg ²⁺ . If the final concentration of Mg ²⁺ is 10⁻¹⁰ M , the concentration of OH ⁻( M ) in the solution is [Solubility product for . Mg ( OH )₂=5.6 10⁻¹² ]

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Correct answer: C. 0.24

K _ sp Mg ( OH )₂= [ Mg ⁺² ] [ OH ⁻ ]²5.6 10⁻¹²= [10⁻¹⁰ ] [ OH ⁻ ]² [ OH ⁻ ]= 5.6 10⁻² =0.24 M

Mg ( OH )₂ is precipitated when NaOH is added to a solution of Mg ²⁺ . If the final concentration of Mg ²⁺ is 10⁻¹⁰ M , the concentration of OH ⁻( M ) in the solution is [Solubility product for . Mg ( OH )₂=5.6 10⁻¹² ]

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