Question

write the general molecular formula of alkanes, alkenes, and alkynes. give two examples each?

Answer 1

Alkane - CnH2n+2
e.g.
CH4 (methane), C2H6(ethane)
Alkene - CnH2n
e.g.
C2H4(ethene),
C3H6(propene)
Alkyne - CnH2n-2
e.g.
C3H4(propyne)
C4H6(butyne)

Answer 2

Alkanes: CnH2n+2;

Alkene: CnH2n;

Alkyne: CnH2n−2;

Example of (Alkane) Methane - Ch3
Ethane - C2h6

(Alkenes) Propene - C3h6
Butene - C4h8

(Alkynes) Pentyne - C5h8
Decyne - C10h18