Published by:
CGP EDU Academic Team
Published on: August 14, 2026
PC1 5 vapour decomposes on heating according to the reaction:
PC1 5 (g) 
PC1 3 (g) + C1 2 (g) The density of a sample of a partially dissociated PC1 5 at 1.0 atm and 500 K was found 4.8 g/L. Calculate the degree of dissociation and 
G 0 for the reaction at 500 K. (Given: R = 0.082 LatmK -1 mol -1 , R = 8.314 JK -1 m ol -1 , lnx = 2.3031og 10 x)
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
23.40
PCl 5 (g) 
PCl 3 (g) + Cl 2 (g)
1 - 
(Total moles = 1 + 
)
=23.4kJ
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