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The degree of dissociation is 0.4 at 400...

The degree of dissociation is `0.4` at `400 K` and `1.0` atm for the gaseous reaction
`PCl_(5) hArr PCl_(3)+Cl_(2)`
assuming ideal behaviour of all gases, calculate the density of equilibrium mixture at `400 K` and `1.0` atm (relative atomic mass of P is `31.0` and of Cl is `35.5`).

Text Solution

Verified by Experts

`PCl_(5)(g) rarr PCl_(3)(g) + Cl_(2)(g)`
Average molar mass = 208.5/1.4 = 148.9
`rho(density) = pM/RT = 1 xx 148.9/(0.082 xx 400) = 4.54 g//L`
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