Entropy of mixture of two gases after sudden mixing is

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• The entropy increase due to internal irreversibility is also called entropy production or entropy generation.
• The total entropy of a mixture of gases is the          of the partial entropies.
• A mixture of gases expands from 0.03 m³ to 0.06 m³ at a constant pressure of 1 Mpa & absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is
• When two gases suddenly mix up with each other then resultant entropy of the system will
• 1.6 Kg of air is expanded at constant pressure from 100°C to 0°C resulting in entropy change of - 2.0 J/K 3.2 Kg of air is cooled at constant volume from 100°C to 0°C with a change in entropy of -3.0 J/K. The ratio Cp/ Cv is
• According to entropy principle, the entropy of an isolated system can never decrease and remains constant only when the process is reversible.
• The rate of entropy increase of the control volume          or          the net rate of entropy transfer to it.
• The rate at which entropy is transferred out must          the rate at which entropy enters the control volume.
• For two different paths between same two points, entropy change is
• The fact that internal energy of a mixture is equal to the sum of the partial internal energies of the gases can also be applied to properties like H,Cv,Cp,S,F, and G.