One mole of triatomic vapor of an unknown substance effused 4/3 times faster than 1 mole O2 under same conditions.

Question

One mole of triatomic vapour of an unknown substance effused $4 / 3$ times faster than 1 mole $O _{2}$ under same conditions. If the density of unknown vapours at pressure $P$ and temperature $T$ is ' $d$ ', which of the following holds true for the unknown substance.

(A) Vapour density (V.D.) $=9 .$

(B) Atomic weight $=6$

(C) $Z$ (compressibility factor) $=\frac{18 P }{d R T}$

(D) Gas is heavier than $O _{2}$.

Answer 1

The correct option of this question is (A), (B) & (C).