Redox Reactions And Electrochemistry Ques 523

Question: In which of the following reactions $ H_2O_2 $ is a reducing agent [CPMT 1981; NCERT 1981; BHU 1999]

Options:

A) $ 2FeCl_2+2HCl+H_2O_2,\to ,2FeCl_3+2H_2O $

B) $ Cl_2+H_2O_2\to 2HCl+O_2 $

C) $ 2HI+H_2O_2,\to 2H_2O+I_2 $

D) $ H_2SO_3+H_2O_2,\to H_2SO_4+H_2O $

Show Answer

Answer:

Correct Answer: B

Solution:

$ C\overset{o}{\mathop{l_2}},+H_2O_2\to \overset{,-1}{\mathop{2HCl}},+O_2 $ . In this reaction chlorine reduced from zero to - 1 oxidation state.



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