A pale yellow precipitate and a gas with pungent odour are formed on warming dilute hydrochloric acid with an aqueous solution containing: | Qualitative and Quantitative Analysis — Chem-Mantra | Chem-Mantra

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Question

A pale yellow precipitate and a gas with pungent odour are formed on warming dilute hydrochloric acid with an aqueous solution containing:

Answer: C

💡 Solution & Explanation

S2O3^2- + 2H+ -heat-> SO2(gas pungent odour) + S(pale yellow ppt.) + H2O

💬

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