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Most Important Selected Qs for JEE AdvancedChemistryStates of Matter

One mole of triatomic vapours of an unknown substance effuses 4 3 time faster than 1 mole of O ₂ under identical conditions. If the density of unknown vapours at pressure P and temperature T is d , which of the following statement(s) is/are correct for the unknown substance?

Options

  1. ADensity at NTP = 0.8035 ~g / L
  2. Bz (compressibility factor) = 15 P 4 dRT
  3. CVapour density = 9
  4. Dz (compressibility factor) = 18 P dRT

Correct answer

D. z (compressibility factor) = 18 P dRT

Step-by-step solution

aligned & R_ vap R_ O ₂ = 32 M_ vap = 4 3 & M_ vap = 32 9 16 =18 & VD =9 ; Density at NTP & = 18 22.4 =0.8035 gm / L & Z= P V n R T = P M d R T = 18 P d R T aligned

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