Mg(OH)₂ ( K _sp = 8

question 52

Multiple Choice

Mg(OH) ₂ ( K _sp = 8.9×10 ^{- 12}) is precipitated by the addition of strong base to a 0.10 M solution of MgCl₂. At what [OH ^- ] will Mg(OH) ₂ begin to precipitate?

• A) 1.0 M
• B) 0.10 M
• C) 9.4×10 ^{- 6} M
• D) 2.1×10 ^{- 4} M
• E) 8.9×10 ^{- 12} M

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