Q. For H_{3}PO_{3} and H_{3}PO_{4} the correct choice is
A) H_{3}PO_{3} is dibasic and reducing
B) H_{3}PO_{3} is dibasic and non-reducing
C) H_{3}PO_{3} is tribasic and reducing
D) H_{3}PO_{3} is tribasic and non reducing
Explanation
(a)
The structure of H_{3}PO_{3} is given as
[image:7_image60.emf]
In this structure two —OH group are present, so it is dibasic acid. In it one P—H bond is present, so it provides hydrogen and due to such hydrogen it acts as reducting agent.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.