What Is the Minimum Concentration of Cu²⁺ Required to Begin $\times$

question 33

Multiple Choice

What is the minimum concentration of Cu²⁺ required to begin precipitating Cu(OH) ₂(s) in a solution buffered at pH 10.63? The K_sp of Cu(OH) ₂ is 2.6 $\times$ 10^-19 and K_w = 1.01 $\times$ 10^-14.

• A) 2.1 \(\times\) 10^-4 M
• B) 1.1 \(\times\) 10^-8 M
• C) 6.1 \(\times\) 10^-16 M
• D) 1.4 \(\times\) 10^-12 M
• E) 2.3 \(\times\) 10^-21 M

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