The evolution of a red-brown gas on heating a salt with K2Cr2O7 and concentrated H2SO4 can arise fro — Qualitative and Quantitative Analysis Chemistry Question
Question
The evolution of a red-brown gas on heating a salt with K2Cr2O7 and concentrated H2SO4 can arise from:
Answer: A,B,C,D
💡 Solution & Explanation
A chloride gives CrO2Cl2 (deep red), a bromide gives Br2 (red-brown), and nitrate/nitrite give NO2 (red-brown). Thus, all evolve red-brown gases.
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