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Grade: 12 

                        
How K 2 Cr 2 O 7 + conc. H 2 SO 4 acts as an oxidising agent ?
5 years ago

Answers : (1)

Sakshi
askIITians Faculty
652 Points 
							The chromate and dichromate ions are fairly strong oxidizing agents. Commonly three electrons are added to a chromium atom, reducing it to oxidation state +3. In acid solution the aquated Cr3+ ion is produced.

Cr2O72− + 14 H3O+ + 6 e− → 2 Cr3+ + 21 H2O (ε0 = 1.33 V)
5 years ago
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