Chemical Engineering Thermodynamics
In the reaction, H₂ +I₂ ⇋ 2HI, addition of an inert gas will

Increase the partial pressure of I₂
Increase the total pressure and hence shift the equilibrium towards the right
Increase the partial pressure of H₂
Not effect the equilibrium conditions

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Chemical Engineering Thermodynamics
Gibbs-Duhem equation

States that n₁dμ₁ + n₂dμ₂ + ....njdμj = 0, for a system of definite composition at constant temperature and pressure
Applies only to binary systems
None of these
Finds no application in gas-liquid equilibria involved in distillation

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