Redox Reactions And Electrochemistry Ques 690

Question: Which of the following substances acts as an oxidising as well as a reducing agent-

Options:

A) $ Na_2O $ $ $

B) $ SnCl_2 $

C) $ Na_2O_2 $

D) $ NaNO_2 $

Show Answer

Answer:

Correct Answer: D

Solution:

[d] In $ Na_2O,SnCl_2 $ and $ Na_2{{O}_2} $ central atom is either in lowest or highest oxidation state, so they can function either as an oxidizing .or a reducing agent but not both. However, the oxidation state of N in $ Na_2{{O}_2} $ is +3 which lies between its highest (+5) and lowest $ ( -3 ) $ values.



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