Redox Reactions And Electrochemistry Ques 431

Question: Oxidation number of $ P $ in $ Mg_2P_2O_7 $ is [CPMT 1989; MP PMT 1995]

Options:

A) + 3

B) + 2

C) + 5

D) - 3

Show Answer

Answer:

Correct Answer: C

Solution:

$ \overset{,*}{\mathop{Mg_2P_2O_7}}, $ $ 4+2x-2\times 7=0 $ ; $ 2x=14-4=10 $ $ 2x=10 $ ; $ x=\frac{10}{2}=+,5 $ .



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