Redox Reactions And Electrochemistry Ques 430

Question: Phosphorus has the oxidation state of +3 in [NCERT 1982; RPMT 1999]

Options:

A) Orthophosphoric acid

B) Phosphorus acid

C) Metaphosphoric acid

D) Pyrophosphoric acid

Show Answer

Answer:

Correct Answer: B

Solution:

$ \overset{*}{\mathop{H_3PO_3,}}, $ $ 3+x-2\times 3=0 $ ; $ x=6-3=+3 $ .



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