When a solid sample of Potassium Dichromate () is intensely heated with concentrated and a soluble metal chloride (such as ), characteristic dense, orange-red vapours are heavily evolved. What is the

Question

When a solid sample of Potassium Dichromate ($K_2Cr_2O_7$) is intensely heated with concentrated $H_2SO_4$ and a soluble metal chloride (such as $NaCl$), characteristic dense, orange-red vapours are heavily evolved. What is the exact chemical formula of these specific vapours?

Prashant Kotian · Accepted Answer

Correct answer: C. This reaction outlines the classic Chromyl Chloride Test, used for the qualitative detection of chloride ions. When is heated with a chloride salt and concentrated sulfuric acid, it produces dense orange-red fumes of Chromyl Chloride (). The reaction is: .

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