Chromium Compounds
Mediumchemistry
On treating K₂Cr₂O₇ with concentrated H₂SO₄, the product formed is:
Select the correct option:
Solution
Incorrect! Answer:
CrO₃
- Reactants: Solid Potassium Dichromate and concentrated Sulfuric Acid.
- Reaction: K2Cr2O7+H2SO4(conc.)→2CrO3+2KHSO4+H2O
- Product: Chromium Trioxide (CrO3), which appears as bright red needle-like crystals.
- It is a highly acidic oxide and a very strong oxidizing agent (often called 'chromic anhydride').
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About This Question
- Subject
- chemistry
- Chapter
- d- and f-block elements
- Topic
- chromium compounds
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
CrO₃
- Reactants: Solid Potassium Dichromate and concentrated Sulfuric Acid.
- Reaction: K2Cr2O7+H2SO4(conc.)→2CrO3+2KHSO4+H2O
- Product: Chromium Trioxide (CrO3), which appears as bright red needle-like crystals.
- It is a highly acidic oxide and a very strong oxidizing agent (often called 'chromic anhydride').
This medium difficulty chemistry question is from the chapter d- and f-block elements, covering the topic of chromium compounds. It appeared in the 2025 exam.
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