Redox Reactions And Electrochemistry Ques 8
Question: For decolourization of 1 mole of $ KMnO_4 $ , the moles of $ H_2O_2 $ required is [AIIMS 2004]
Options:
A) 1/2
B) 3/2
C) 5/2
D) 7/2
Show Answer
Answer:
Correct Answer: C
Solution:
$ 2KMnO_4+3H_2SO_4\xrightarrow{{}}K_2SO_4+2MnSO_4 $ $ +3H_2O+5O $ $ 5H_2O_2+5O\xrightarrow{{}}5H_2O+5O_2 $ $ 2KMnO_4+3H_2SO_4+5H_2O_2\xrightarrow{{}}K_2SO_4+2MnSO_4 $ $ +8H_2O+5O_2 $
