Redox Reactions And Electrochemistry Ques 108
Question: One mole of $ N_2H_4 $ loses 10 mol of electrons to form a new compound Y. Assuming that all nitrogen appear in the new compound, what is the oxidation state of $ N_2 $ in Y - (There is no change in the oxidation state of hydrogen) [IIT 1981; Pb. PMT 1998]
Options:
A) + 3
B) - 3
C) - 1
D) + 5
Show Answer
Answer:
Correct Answer: A
Solution:
$ N_2^{2-}\to _2{{N}^{a+}}+10{{e}^{-}} $ \ $ 2a-[2\times (-2)]=10 $ \ $ a=+3 $ .
