Chemical Engineering Thermodynamics A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system U decreases but S is constant U is constant but S decreases Its internal energy (U) decreases and its entropy (S) increases U and S both decreases U decreases but S is constant U is constant but S decreases Its internal energy (U) decreases and its entropy (S) increases U and S both decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The free energy change for a chemical reaction is given by (where, K = equilibrium constant) T lnK RT lnK -RT lnK -R lnK T lnK RT lnK -RT lnK -R lnK ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Which of the following is Virial equation of state? PV = A + B/V + C/V² + D/V³ + … None of these (p + a/V²)(V - b) = nRT PV = nRT PV = A + B/V + C/V² + D/V³ + … None of these (p + a/V²)(V - b) = nRT PV = nRT ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics For a multicomponent system, the term chemical potential is equivalent to the Molar free energy change Molal concentration difference Partial molar free energy Molar free energy Molar free energy change Molal concentration difference Partial molar free energy Molar free energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In polytropic process (PVn = constant), if n = 1; it means a/an __________ process. Reversible Isothermal None of these Adiabatic Reversible Isothermal None of these Adiabatic ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Compound having large heat of formation is More stable Less stable Either more or less stable ; depends on the compound Not at all stable (like nascent O₂) More stable Less stable Either more or less stable ; depends on the compound Not at all stable (like nascent O₂) ANSWER DOWNLOAD EXAMIANS APP
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