Question

Write the industrial name of ethyne with its uses.

Answer 1

Hint: Consider the first member of the alkyne group. Alkyne is an unsaturated hydrocarbon containing at least one carbon-carbon triple bond.

Complete answer:
> Chemical formula of ethyne is $H - C \equiv C - H$ or $CH \equiv CH$
> Ethyne is the first member of the alkyne group. Alkynes have a triple bond between at least two adjacent carbon atoms. Triple bond is made up of one $\sigma $ bond and two $\pi $bonds. Due to the presence of three bonds, the bond energy of alkyne is more than that of alkane and alkene. (alkane has a single bond and alkene has double bond).
> Ethyne has a linear structure and its bond angle is $180^\circ$. Industrial name of ethyne is acetylene.

Additional Information: Uses:
(1) Acetylene with oxygen form oxy-acetylene which is used in welding.
(2) Ethanol, acetic acid, vine polymer and plastic substance are prepared using acetylene.
(3) Acetylene is used for synthesis of many chemical compounds like acetic acid.
(4) Acetylene is also used in volatilization of carbon in radiocarbon dating.

Note: Acetylene is a colorless gas and widely used as a fuel and a chemical building block. It is unstable in its pure form. Commercially graded acetylene usually has some odour due to the presence of impurities. It is inflammable gas therefore widely used as a fuel in oxyacetylene welding.