Chemical Engineering Thermodynamics - Study Mode
[#226] An isentropic process is carried out at constant
Correct Answer
(A) Volume
Explanation
Solution: An isentropic process is that process where entropy remains constant. The reversible adiabatic process is considered as isentropic process.
[#227] Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas)
Correct Answer
(A) T
Explanation
Solution: Translational kinetic energy of an ideal gas is given by $$ = frac{3}{2}KT.$$
[#228] If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in
Correct Answer
(C) Both A & B
Explanation
Solution: An ideal solution is that where the components behaves like pure components. For an ideal solution the heat of mixing or enthalpy change and volume change due to mixing is zero. Since, volume change of mixing $$ = {V^t}left( {T,P}
ight) - sum {} {x_i}{V_i}left( {T,P}
ight).$$ Where $${V^t}$$ $$=$$ total molar volume of the solution at temperature $$T,$$ pressure $$P.$$ [{{V}_{i}}] $$=$$ molar volume of species when existed as pure species at same $$T,,P.$$ From summability: [{{V}^{t}}=sum{{}}{{x}_{i}}{{{overset{lower0.5emhbox{$smash{scriptscriptstylesmile}$}}{V}}}_{l}}] Where [{{{overset{lower0.5emhbox{$smash{scriptscriptstylesmile}$}}{V}}}_{l}}=] partial molar volume since for ideal solution [sum{{}}{{x}_{i}}{{{overset{lower0.5emhbox{$smash{scriptscriptstylesmile}$}}{V}}}_{l}}=sum{{}}{{x}_{i}}{{V}_{i}}left( T,P
ight)Rightarrow ] xa0 xa0 Volume change of mixing $$= 0$$ Similarly, enthalpy change of mixing or heat of mixing $$= 0$$
[#229] Joule-Thomson co-efficient depends on the
Correct Answer
(C) Both A & B
Explanation
Solution: Joule Thomson coefficient is nothing but the slope of temperature and pressure plot drawn during throttling so, it is dependent on both temperature and pressure.
[#230] In Joule-Thomson porous plug experiment, the
Correct Answer
(D) None of these
Explanation
Solution: During the joule-thomson plug experiment fluid is allowed to pass through valve or porous plug and observations are required for this experiment if we write steady flow energy equation we will get to know that enthalpy remains constant.