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Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of:
(1) CrO3
(2) Cr2O3
(3) CrCl3
(4) CrO2Cl2

Harshit Singh , 5 Years ago
Grade 12th pass
anser 1 Answers
Pawan Prajapati
Answer ::

K2Cr2O7 + 6H2SO4 + 4NaCl → 2KHSO4 + 4NaHSO4 + 2CrO2Cl2 + 3H2O
Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of CrO2Cl2
Hence option (4) is the answer.


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Last Activity: 5 Years ago
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