Answer:
Alkanes => CH4, C10H22
Alkenes => C2H4, C3H6
Alkynes => C2H2
Step-by-step explanation:
Alkanes are saturated hydrocarbons with general formula CnH2n+2
Alkenes are unsaturated hydrocarbons with general formula CnH2n
Alkynes unsaturated hydrocarbons with general formula CnH2n–2
With these ideas in mind, let us answer your question given above.
1. When n = 1
Alkanes => CnH2n+2 => C1H(2x1)+2 => CH4.
2. When n = 2
Alkanes => CnH2n+2 => C2H(2x2)+2 => C2H6
Alkenes => CnH2n => C2H(2x2) => C2H4
Alkynes => CnH2n–2 => C2H(2x2)–2 => C2H2
3. When n = 3
Alkanes => CnH2n+2 => C3H(2x3)+2 => C3H8
Alkenes => CnH2n => C3H(2x3) => C3H6
Alkynes => CnH2n–2 => C3H(2x3)–2 => C3H4
4. When n = 10
Alkanes => CnH2n+2 => C10H(2x10)+2 => C10H22
Alkenes => CnH2n => C10H(2x10) => C10H20
Alkynes => CnH2n–2 => C10H(2x10)–2 => C10H18
From the above illustrations
Alkanes => CH4, C10H22
Alkenes => C2H4, C3H6
Alkynes => C2H2