The gas which cannot be dried by conc. H2SO4 ?
Correct answer: B. H2S
- A. SO2
- B. H2S
- C. CO2
- D. C2H4
Explanation
Concentrated H2SO4 cannot dry H2S because it oxidises H2S to sulfur, while itself being reduced: H2S + H2SO4 -> S + SO2 + 2H2O. SO2 may be chosen because it is also a reducing gas, but concentrated sulfuric acid can generally remove water from SO2 without this destructive reaction under standard drying conditions.
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About Reactions of Group IV Elements
Group IV, or Group 14, chemistry covers the trends from carbon and silicon to tin and lead, including their reactions with oxygen, halogens, water, acids and alkalis. It also examines the structures and properties of their oxides and chlorides, oxidation states, and the inert pair effect, rather than treating all members as equally metallic.
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