JEE Mains · Chemistry · STD 11 - 7. Redox reactions
In the titration of \(KMnO _{4}\) and oxalic acid in acidic medium, the change in oxidation number of carbon at the end point is
- A \(1\)
- B \(0\)
- C \(2\)
- D \(3\)
Answer & Solution
Correct Answer
(A) \(1\)
Step-by-step Solution
Detailed explanation
Oxidation state of carbon changes from \(+3\) to \(+4\). \(2 KMnO _{4}+5 H _{2} C _{2} O _{4}+3 H _{2} SO _{4}(\text { dil. }) \)\(\rightarrow K _{2} SO _{4}+2 MnSO _{4}+10 CO _{2}+8 H _{2} O\)
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