Which of the following reagents can be used to distinguish between SO2 and CO2? — Qualitative and Quantitative Analysis Chemistry Question
Question
Which of the following reagents can be used to distinguish between SO2 and CO2?
Answer: C,D
💡 Solution & Explanation
SO2 is oxidised by H2O2 to H2SO4 which forms white ppt of BaSO4 with BaCl2 insoluble in HCl, CO2 does not. SO2 turns acidified dichromate paper green, CO2 does not.
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