MCQ
The colour of copper sulphide is
- ABlue
- ✓Black
- CRed
- DGreen
✓
Answer
Correct option: B.
Black
b
Copper sulphide is black in colour. $Cu^{2+}$ is placed in $II$ group of inorganic qualitative analysis. It is precipitated in the form of sulphide by passing $H_2S$ in presence of dil. $HCl$.
Copper sulphide is black in colour. $Cu^{2+}$ is placed in $II$ group of inorganic qualitative analysis. It is precipitated in the form of sulphide by passing $H_2S$ in presence of dil. $HCl$.
$C{{u}^{2+}}\,+\,{{H}_{2}}S\,\to \,\underset{\text{black}}{\mathop{CuS}}\,\,+\,2{{H}^{+}}$
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