Question

Given that you know the formula of acetic acid or ethanoic acid.
Find the formula of:-
1) Methanoic acid
And
2) Propanoic acid

Answer 1

Methanoic Acid : COOH

Propanoic Acid : $CH_{3}CH_{2}COOH$

Answer 2

Answer:

We know that each compound in a particular functional group each homologue differs by

CH2. Hence we can find out the following formulae with the help of Ethanoic acid.

1) CH3COOH - CH2

Gives us ,

HCOOH - METHANOIC ACID.

2)CH3COOH + CH2

Gives us ,

C2H5COOH - PROPANOIC ACID.

....