Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process, the oxidation state…
d & f-Block Elements · Class 12 · JEE Main Previous Year Question
Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process, the oxidation state changes from:
- a
+3 to +1
- b✓
+6 to +3
- c
+2 to +1
- d
+6 to +2
+6 to +3
Concept: Reduction of in acidic medium
In acidic solution, acts as an oxidising agent:
- Cr in : +6
- Cr in : +3
Change: +6 → +3 (gain of 3 electrons per Cr atom, 6 electrons total for 2 Cr)
The green colour of is observed at the end of the reaction.
Answer: Option (2) — +6 to +3
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