The correct order of acidic strength of the following is
(I) Oxalic acid $H O O C - C O O H$
(II) Malonic acid $H O O C - C H_{2} - C O O H$
(III) Succinic acid $H O O C - {(C H_{2})}_{2} - C O O H$
(IV) Glutaric acid $H O O C - {(C H_{2})}_{3} - C O O H$

Question

TestHub · Accepted Answer

Acidic strength of dicarboxylic acid is based on the +I effect of alkyl group. As +I increases acidic nature decreases.
Compounds with formula $H O O C - {(C H_{2})}_{n} - C O O H$ are called dicarboxylic acid.
Acidic strength order is:
Oxalic acid > Malonic acid > Succinic acid > Glutaric acid

Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

Options:

Doubts & Discussion