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Question: Answered & Verified by Expert
Potassium dichromate is used -
Chemistryd and f Block ElementsNEET
Options:
  • A As a reducing agent
  • B In electroplating
  • C As an insecticide
  • D as an oxidizing agent it oxidises ferrous ions into ferric ions in acidic media
Solution:
1108 Upvotes Verified Answer
The correct answer is: as an oxidizing agent it oxidises ferrous ions into ferric ions in acidic media
Potassium dichromate K2Cr2O7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications.

Ferrous iron is oxidized to ferric iron by potassium dichromate in acid solution. The completion of oxidation reaction marked by the appearance of blue violet color of diphenylamine, which is used as an internal indicator.

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