Chemical Engineering Thermodynamics __________ does not change during phase transformation processes like sublimation, melting & vaporisation. Entropy All of these Gibbs free energy Internal energy Entropy All of these Gibbs free energy Internal energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The change in Gibbs freee energy for vaporisation of a pure substance is Zero May be positive or negative Negative Positive Zero May be positive or negative Negative Positive ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Heat of reaction is Dependent on pressure only Independent of temperature changes Dependent on temperature only Dependent on both pressure and temperature Dependent on pressure only Independent of temperature changes Dependent on temperature only Dependent on both pressure and temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The free energy change for a chemical reaction is given by (where, K = equilibrium constant) -R lnK -RT lnK RT lnK T lnK -R lnK -RT lnK RT lnK T lnK ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Critical temperature is defined as the temperature above which a gas will Not liquify (barring exceptions) Immediately liquify None of these Never liquify however high the pressure may be Not liquify (barring exceptions) Immediately liquify None of these Never liquify however high the pressure may be ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of Temperature only Temperature and pressure only Temperature, pressure, liquid composition xi and vapour composition yi Temperature, pressure and liquid composition xi only Temperature only Temperature and pressure only Temperature, pressure, liquid composition xi and vapour composition yi Temperature, pressure and liquid composition xi only ANSWER DOWNLOAD EXAMIANS APP
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