A) \[{{H}_{3}}P{{O}_{3}}\] is dibasic and reducing
B) \[{{H}_{3}}P{{O}_{4}}\] is diabasic and non-reducing
C) \[{{H}_{3}}P{{O}_{4}}\] is tribasic and reducing
D) \[{{H}_{3}}P{{O}_{4}}\] is tribasic and non-reducing
Correct Answer: A
Solution :
[a] The structure of \[{{H}_{3}}P{{O}_{3}}\] is as given below. There are only two \[-OH\] groups and hence it is dibasic. The oxidation number of P in this acid is +3, whereas P may have +5 oxidation state also. Therefore, \[{{H}_{3}}P{{O}_{3}}\] can be oxidised which means \[{{H}_{3}}P{{O}_{3}}\] is a reducing agent.You need to login to perform this action.
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