question_answer

The formula of an oxyacid of phosphorus is \[{{H}_{3}}P{{O}_{4}}\]. It is a [MP PMT 1996; CPMT 1999; J & K CET 2005]

A) Dibasic acid

B) Monobasic acid

C) Tribasic acid

D) Tetrabasic acid

Correct Answer: C

Solution :

\[{{H}_{3}}P{{O}_{3}}\,\to \]Tribasic acid® \[3-OH\]groups are present \[{{H}_{3}}P{{O}_{4}}\,\to \,3{{H}^{+}}+PO_{4}^{3-}\]