Question

An aldehyde as well as a ketone can be represented by the same molecular formula , say C3H6O. write their structures and name them . state the relation between the two in the language of science ?

Answer 1

​Aldehyde :- CH3CH2CHO = C3H6O (Propanal)
Ketone :- CH​3COCH3 = C3H6​O​ (Propanone)
Since they both have same molecular formula but having different Structure.
So, They both are Isomers.

Answer 2

An ‘aldehyde’ as well as a ‘ketone’ can be represented by the same ‘molecular formula’ are given below,

$\bold{\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHO}}$ - propanaldehyde or propanal (aldehyde)

$\bold{\mathrm{CH}_{3} \mathrm{COCH}_{3}}$ - acetone or propanone (Ketone)  

The aldehydes and ketones both have a double bond between their hydrogen and their oxy atoms. To distinguish between an aldehyde and a ketone one may use the Tollin’s test, this test uses the fact that an aldehydes gets oxidised but a ketone cannot be oxidised.