MCQ
What happens when calcium carbide is treated with water?
- AEthane is formed.
- BMethane and ethane are formed.
- ✓Ethyne is formed.
- DEthene and ethyne are formed.
✓
Answer
Correct option: C.
Ethyne is formed.
If we mix calcium carbide with water ethyne is released due to endothermic reaction between them.
This is the industrial method of producing ethyne.
$\mathrm{Ca}^{2+}[\mathrm{C} \equiv \mathrm{C}]^{2-}+2 \mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{CH} \equiv \mathrm{CH}+\mathrm{Ca}(\mathrm{OH})_2$
This is the industrial method of producing ethyne.
$\mathrm{Ca}^{2+}[\mathrm{C} \equiv \mathrm{C}]^{2-}+2 \mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{CH} \equiv \mathrm{CH}+\mathrm{Ca}(\mathrm{OH})_2$
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