Question

The correct decreasing order of Boiling points

• A. $R - CH _{2}- NH _{2}> RCOOH > RCH _{2} OH$
• B. $R - CH _{2} OH > RCOOH > RCH _{2} NH _{2}$
• C. $R - COOH > RCH _{2} OH > RCH _{2} NH _{2}$
• D. $RCH _{2} OH > RCH _{2} NH _{2}> RCOOH$

Answer 1

Answer: (C)

$B.P$ of carboxylic acid is highest due to strong intermolecular $H-$ bonding.



$B.P$ of alcohol is higher than amines due, to high Electronegativity of oxygen than Nitrogen so alcohols form more strong H-bonding than amines

$\frac{ RCOOH > R - OH > R NH _{2}}{\text { order of Boiling point }}$