Question

The products P and Q in the following reactions are:

• A. P is an aldehyde whereas Q is a carboxylic acid.
• B. P is a carboxylic acid whereas Q is a ketone.
• C. P is and Q both are aldehydes.
• D. P is and Q both are carboxylic acids.

Answer 1

The correct option is B P is a carboxylic acid whereas Q is a ketone.

Jones reagent: $Aq.H_{2}Cr{O}_4+\text{Acetone}orCr{O}_3+H_{2}S{O}_4+\text{Acetone}$

It is used for the oxidation of Alcohols. It converts primary alcohols to carboxylic acids and secondary alcohols to ketones
In reaction (i), $1^{\circ }$ alcohol is converted to ethanoic acid (carboxylic acid)
In reaction (ii), $2^{\circ }$ alcohol is converted to propanone (ketone)