Redox Reactions And Electrochemistry Ques 678

Question: The number of electrons involved in the reduction of one nitrate ion to hydrazine is

Options:

A) 8

B) 5

C) 3

D) 7

Show Answer

Answer:

Correct Answer: D

Solution:

[d] $ \overset{+5}{\mathop{N}},O_3^{-}\xrightarrow{{}}{{\overset{-2}{\mathop{N}},}_2}H_4 $ So, for reduction of 1 mole of $ NO_3^{-} $ number of electrons required is 7.



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