Chemical Engineering Thermodynamics Third law of thermodynamics is helpful in Calculating absolute entropies of substances at different temperature Prediction of the extent of a chemical reaction Evaluating entropy changes of chemical reaction Both B and C Calculating absolute entropies of substances at different temperature Prediction of the extent of a chemical reaction Evaluating entropy changes of chemical reaction Both B and C ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In a working refrigerator, the value of COP is always > 1 < 1 < 0 > 1 < 1 < 0 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In an ideal refrigeration cycle, the change in internal energy of the fluid is -ve +ve Either of the above three ; depends on the nature of refrigerant -ve +ve Either of the above three ; depends on the nature of refrigerant ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole. 0 273 None of these 25 0 273 None of these 25 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by(where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) μ°+ R lnf μ° + T lnf μ° + RT ln f μ° + R/T lnf μ°+ R lnf μ° + T lnf μ° + RT ln f μ° + R/T lnf ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Law of corresponding states says that , two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories) No gas can be liquified above the critical temperature, howsoever high the pressure may be , two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories) No gas can be liquified above the critical temperature, howsoever high the pressure may be ANSWER DOWNLOAD EXAMIANS APP
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