Chemical EquilibriumHard

Question

Phosphine decomposes at 300 K and 3 atmosphere as 
4PH3(g)  ⇋ P4(g) + 6H2(g)
Calculate the vapour density of phosphine if it dissociates to the extent of 30%

Options

A.18.14
B.10
C.13.8
D.11.14

Solution

α = ,     Where DT =

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