Question

What happens when calcium carbide is treated with water?

• A. Ethane is formed.
• B. Methane and ethane are formed.
• C. Ethyne is formed.
• D. Ethene and ethyne are formed.

Answer 1

Answer: (C)

Ethyne is formed.

Answer 2

When $\mathrm { CaC } _ { 2 }$reacts with water, it gives ethyne.

$\mathrm { CaC } _ { 2 } + 2 \mathrm { H } _ { 2 } \mathrm { O } \rightarrow \mathrm { CH } \equiv \mathrm { CH } + \mathrm { Ca } \left( \mathrm { OH } _ { 2 } \right)$