An example of monobasic organic acid is-
Acetic acid
Monobasic acids-
Monobasic acids are those that have only one replaceable hydrogen atom. Thus, it can release only one H+.
Organic acids-
Organic acids are those that are majorly composed of Carbon and Hydrogen atoms.
Explanation of the correct option:
The correct option is A.
The formula for Acetic acid is CH3COOH.
It can release only one H+ to form CH3COO-.
Hence, it is a monobasic organic acid.
Explanation of the incorrect options :
Option B:
The formula of Oxalic acid is HOOC-COOH. Thus, it is capable to release two protons. Hence, it is a dibasic organic acid.
Option C:
The formula of Carbonic acid is H2CO3. Carbonic acid can release two hydrogen atoms and it is not an organic acid. Hence, Carbonic acid is a dibasic inorganic acid.
An example of monobasic organic acid is acetic acid.