Question

Write names and molecular formulas of first four members of alkanes and their corre sponding alcohols.Answer the given question in detail.

Answer 1

Alkanes have the General Formula of CnH₍₂n ₊ ₂₎

For first four members,

1. n = 1,

CH₍₂ ₊ ₂₎ = CH₄

IUPAC Name ⇒ Methane.

2. n = 2

C₂H₍₄ ₊ ₂₎ = C₂H₆

IUPAC Name ⇒ Ethane.

3. For n = 3,

C₃H₍₆ ₊ ₂₎ = C₃H₈

IUPAC Name ⇒ Propane.

4. For n = 4,

C₄H₍₈ ₊ ₂₎ = C₄H₁₀

IUPAC Name ⇒ Butane.

There corresponding Alcohols are ⇒

1. Methyl Alcohol, CH₃OH (Methanol)

2. Ethyl Alcohol, C₂H₅OH (Ethanol)

3. Propyl Alcohol, C₃H₇OH

4. Butyl Alcohol, C₄H₉OH

Hope it helps.