Chemical Engineering Thermodynamics
The necessary condition for phase equilibrium in a multiphase system of N components is that the

Chemical potentials of a given component should be equal in all phases
Sum of the chemical potentials of any given component in all the phases should be the same
Chemical potentials of all components should be same in a particular phase
None of these

ANSWER DOWNLOAD EXAMIANS APP

Chemical Engineering Thermodynamics
If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as

Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution
Solubility increases as temperature decreases
Solubility increases as temperature increases
Solubility is independent of temperature

ANSWER DOWNLOAD EXAMIANS APP