The gas which cannot be dried by conc. HSO4
Correct answer: B. H2S (hydrogen sulfide) cannot be dried by concentrated sulfuric acid (H2SO4)
- A. SO2 (sulfur dioxide)
- B. H2S (hydrogen sulfide) cannot be dried by concentrated sulfuric acid (H2SO4)
- C. CO2 (carbon dioxide)
- D. C2H4 (ethylene)
Explanation
Reason: H2S reacts with concentrated H2SO4, forming sulfur and water:H2S + H2SO4 → S + 2H2O
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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