What Is the Minimum PH at Which Cobalt(II)hydroxide (K_sp =

question 82

Multiple Choice

What is the minimum pH at which cobalt(II) hydroxide (K_sp = 2.0 × 10^-16) will precipitate from an aqueous solution of 0.020 M in Co²⁺?

• A)5.8
• B)6.2
• C)7.0
• D)7.8
• E)8.2

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