Question

Write structural formula and name of 4$^{th}$ member of alcohol homologous series.

Hint:

4$^{th}$ alcohol = Butanol (C$_4$H$_9$OH).

Answer 1

Homologous Series: Alcohols follow the general formula C$_n$H$_{2n+1}$OH. First four members:

• 1$^{st}$ → Methanol (CH$_3$OH)
• 2$^{nd}$ → Ethanol (C$_2$H$_5$OH)
• 3$^{rd}$ → Propanol (C$_3$H$_7$OH)
• 4$^{th}$ → Butanol (C$_4$H$_9$OH)

Name: Butanol Structural Formula: CH$_3$–CH$_2$–CH$_2$–CH$_2$OH