Question

Consider equation: Cu⁺² (aq) + 2OH⁻(aq) → Cu (OH)₂ (s). precipitate of Copper Hydroxide (Cu (OH)₂) will be of which colour?



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Answer 1

pale blue precipate us formed

Answer 2

According to the reaction $\[C{u^{2 + }}(aq.) + 2O{H^ - }(aq.) \to Cu{(OH)_2}\]$, the precipitate of Copper Hydroxide (Cu (OH)₂) will be of pale greenish-blue colour.

Explanation:

• Copper (II) hydroxide is formed by the reaction of copper sulphate with sodium hydroxide.
• The reaction produces a precipitate of copper (II) hydroxide ($\[Cu{(OH)_2}\]$).
• It is pale greenish-blue in colour.
• It is also a strong base.
• The reaction can be given as:

        $\[C{u^{2 + }}(aq.) + 2O{H^ - }(aq.) \to Cu{(OH)_2}\]$