Question

Molecules of ethanoic acid dimerises in benzene due to $H-$bonding if all molecules of ethanoic acid associated in benzene then:

• A. boiling boiling of ethanoic acid become half of normal value
• B. freezing point of ethanoic acid become twice of normal value
• C. molar mass become twice of normal value
• D. vapour pressure of solution decreases due to dimerisation

Answer 1

The correct option is C molar mass become twice of normal value

As molecules of ethanoic acid dime rises in benzene due to the $H-$bonding its molar mass becomes twice of normal value.