What is the solubility of copper(II) hydroxide in sodium hydroxide solution?

1 Answer
anor277
Feb 21, 2017

No, #pH# is determined by measurement, and solely by measurement. However, it is probable that even #"cupric hydroxide"#, will have some solubility, enuff to elevate #pH# ABOVE #7#.

Explanation:

#CuSO_4(aq) + 2NaOH(aq) rarr Cu(OH)_2(s)darr + 2NaCl(aq)#

Your reaction does not include the correct states of the reactants, #"cupric hydroxide"# is quite insoluble in aqueous solution? #K_"sp"# #(Cu(OH)_2)=1.722xx10^-6# at #20# #""^@C# according to this table.

How do we use the #K_"sp"# value to give a solubility in #g*L^-1#?

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