Which compound is an alkyne?
(1) C2H2 (3) C4H8
(2) C2H4 (4) C4H10
the answer is C2H2 because an alkyne compound consists of a series of unsaturated hydrocarbons with a triple bond.
Answer: \(C_2H_2\)
Explanation:
Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms. The general formula for these hydrocarbons is \(C_nH_{2n+2}\) and are called as alkanes.
Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is \(C_nH_{2n}\) and \(C_nH_{2n-2}\) respectively.
\(C_4H_8\) and \(C_2H_4\) are alkenes.
\(C_4H_{10}\) is an alkane.
Thus \(C_2H_2\) with general formula \(C_nH_{2n-2}\) is an alkyne.