Q. Given are H_{3}PO_{2}, H_{3}PO_{3}, H_{3}PO_{4} and H_{4}P_{2}O_{7.} which of the above oxoacids results into two series of salts?
A) H_{3}PO_{2}
B) H_{3}PO_{3}
C) H_{3}PO_{4}
D) H_{4}P_{2}O_{7}
Explanation
(b)
Phosphorus acid (H_{3}PO_{3})is a diprotic acid . It forms two series of salt such as NaH_{2} PO_{3} and Na_{2} HPO_{3} but none of the type NaPO_{3} with NaOH. Its structure is as
[image:7_image27.emf]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.