Question

How many acids and esters are possible for the compound with molecular formula, \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{8}}}{{\text{O}}_{\text{2}}}\]?
a) Two acids, two esters
b) Two acids, three esters
c) Two acids, four esters
d) Three acids, four esters

Answer 1

Hint: We have to remember that in organic chemistry isomers play a major role. In reaction time isomer plays an important role. Depending on the isomer of reactant only product will be obtained. In some cases equal amounts of two isomers will be obtained in the reaction. Acids and esters are called Tautomer.

Complete answer:
The given molecular formula is \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{8}}}{{\text{O}}_{\text{2}}}\]
The acids and esters are two functional isomer possible in the given molecular formula\[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{8}}}{{\text{O}}_{\text{2}}}\].
If we goes to acid isomer in the given molecular formula means,
There are two acid isomers are possible in \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{8}}}{{\text{O}}_{\text{2}}}\] is given below.
There are n-Butanic acid and isobutanic acid are acid isomer.
We can draw the structure given below,

If we goes to ester isomer in the given molecular formula means,
There are two ester isomers are possible in \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{8}}}{{\text{O}}_{\text{2}}}\] is given below.
Ethyl acetate and methyl propanoate are acid isomers.
We can draw the structure given below,

Hence, there are two acids and two ester isomers are possible in the given molecular formula.

Hence, option A is correct.

Note:
We must have to know that the isomer of the organic molecule is divided by two types. There are constitutional isomers and stereoisomers. Further constitutional isomers are classified as chain isomer, position isomer, functional isomer, Metamers, Tautomer and ring chain isomer. The stereoisomers are classified as geometrical isomer and optical isomer. The isomer means the same molecular formula but different in structural or positional or functional or chain of the carbon atom in the organic molecule.