[ X ] + H 2 SO 4 → [ Y ] a colourless gas with irritating smell, [ Y ] + K 2 Cr 2 O 7 + H…

Chemistry · JEE Advanced · NTA ExamsChemical Bonding and Molecular Structure

[X] + H2SO4 → [Y] a colourless gas with irritating smell, [Y] + K2Cr2O7 + H2SO4 green solution.
[X] and [Y] are
  1. SO32–, SO2
  2. Cl, HCl
  3. S2–, H2S
  4. CO32–, CO2

Answer

(A) SO 3 2– , SO 2

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