What concentration of OH- ions is required to begin the precipitation of Cu(OH)2 from a solution containing 0.10 M Cu2+ ions? The Ksp for Cu(OH) = 2.3 x 10-20

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Chapter16: Solubility And Complex Ion Equilibria
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What concentration of OH- ions is required to begin the precipitation of Cu(OH)from a solution containing 0.10 M Cu2+ ions?

The Ksp for Cu(OH) = 2.3 x 10-20 

So I need to find out the concentration of hydroxide ions that are needed.  [ OH- ] = ? 

 

Thank you for helping me again.

 

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