Question

Which amongst the following contains a triple bond?
A. ${{C}_{2}}{{H}_{3}}$
B. ${{C}_{2}}{{H}_{2}}$
C. ${{C}_{2}}{{H}_{4}}$
D. ${{C}_{3}}{{H}_{4}}$

Answer 1

Hint: The organic compounds are going to contain single, double or triple bonds in their structure. Alkanes are organic compounds containing single bonds, alkenes are organic compounds containing double bonds and alkynes are organic compounds containing triple bonds in their structure.

Complete answer:
- In the it is asked to find the organic compound which contains triple bond in its structure among the given options.
- First, we have to know the structures of all the compounds which are given in the options.
- Coming to the option A, ${{C}_{2}}{{H}_{3}}$ .
- Generally, organic compounds are not going to have a molecular formula of ${{C}_{n}}{{H}_{2n-1}}$ .
- Means the compound in option A is not going to exist.
- Coming to option B, ${{C}_{2}}{{H}_{2}}$ .
- The compound in option B is going to have a general molecular formula of ${{C}_{n}}{{H}_{2n-2}}$ .
- Alkynes are the organic compounds going to contain a general molecular formula of ${{C}_{n}}{{H}_{2n-2}}$.
- The structure of the compound ${{C}_{2}}{{H}_{2}}$ is as follows.
\[HC\equiv CH\]
- Means the compound in option B has a triple bond in its structure.
- Coming to option C, ${{C}_{2}}{{H}_{4}}$ .
- The compound in option C is going to have a general molecular formula of ${{C}_{n}}{{H}_{2n}}$ .
- Alkenes are the organic compounds going to contain a general molecular formula of ${{C}_{n}}{{H}_{2n}}$.
- The structure of the compound ${{C}_{2}}{{H}_{4}}$ is as follows.
\[C{{H}_{2}}=C{{H}_{2}}\]
- Coming to option D, ${{C}_{3}}{{H}_{4}}$ .
- The compound in option D is going to have a general molecular formula of ${{C}_{n}}{{H}_{2n-2}}$ .
- Alkynes are the organic compounds going to contain a general molecular formula of ${{C}_{n}}{{H}_{2n-2}}$.
- The structure of the compound ${{C}_{3}}{{H}_{4}}$ is as follows.
\[CH\equiv C-C{{H}_{3}}\]
- Therefore, the compounds which are present in option B and D are going to have triple bonds in their structures.

Note:
By knowing the molecular formula of the organic compound itself we can easily find the type (Alkane, alkene or alkyne) of organic compound it is. Alkanes are going to contain a single bond, alkenes are going to contain a double bond and alkynes are going to contain a triple bond in their structures.