Thermodynamics and Thermochemistry · Physical Chemistry
49 questions in this chapter.
Thermodynamics & Thermochemistry – General
ABC26PH0827 · Justify the following · 2001-2022self-practice
ABC26PH0828 · A system undergoes two cyclic processes 1 and 2. Process 1 is reversible and process 2 is irreversible. The correct statement relating to… · 2001-2022self-practice
ABC26PH0829 · For a cyclic process performed by an ideal gas, changes in some thermodynamic functions are zero. Indicate the set in which all the… · 2001-2022self-practice
ABC26PH0830 · 5(a) When an ideal monoatomic gas is expanded adiabatically from 1.5 bar, 24.8 L and 298 K into an evacuated container, the final volume… · 2001-2022self-practice
ABC26PH0831 · When one mole of ice is converted to water at 0 C and 1 atm , the work done ( 1 atm ) is: · 2001-2022self-practice
ABC26PH0832 · When 100 g of water is reversibly heated from 50 C to 75 C at 1 atm , the change in entropy (JK-1 ) of the · 2001-2022self-practice
ABC26PH0833 · 8(a) A container is partitioned into two compartments, one of which contains 2 moles of He while the other contains 3 moles of Ar. The… · 2001-2022self-practice
ABC26PH0834 · The molar internal energy of a gas at temperature T is Um(T). The molar internal energy at T=0 is Um(0). The correct expression that… · 2001-2022self-practice
ABC26PH0835 · Choose the INCORECT statement among the following: · 2001-2022self-practice
ABC26PH0836 · The work done during the free expansion of one mole of an ideal gas at 27°C to twice its original volume is (given : RT=2494 J mol-1… · 2001-2022self-practice
ABC26PH0837 · Calculate Delta Hm and Delta Sm for the process Assume that at 273 K the molar enthalpy of fusion of ice is 6006 J mol-1, the heat capacity… · 2001-2022self-practice
ABC26PH0838 · One mole of a van der waals gas undergoes reversible isothermal transformation from an initial volume V1 to a final volume V2. The… · 2001-2022self-practice
ABC26PH0840 · 15(a) One mole of an ideal gas initially at 300 K and at a pressure of 10 atm undergoes adiabatic expansion. (i) Reversibly and (ii)… · 2001-2022self-practice
ABC26PH0841 · The enthalpy of vaporization (_ vap H ) is zero at · 2001-2022self-practice
ABC26PH0842 · The standard enthalpy of formation ( H3000 ) at 1 bar and 300 K for the formation of CF2 ClCF2 Cl(g) from its constituent elements in the… · 2001-2022self-practice
ABC26PH0843 · Consider ideal mixing of 2 moles of toluene and 2 moles of benzene at 1 atm and 300 K . Calculate the values of _ mix V, _ mix U, _ mix H… · 2001-2022self-practice
ABC26PH0844 · The following reaction is carried out at 1 atm and 300 K 2 H2(g)+O2(g) 2 H2 O(l) [Given: The volume of 1 mole of liquid water is 18 mL… · 2001-2022self-practice
ABC26PH0845 · The change in entropy for the following transformations is respectively: (+ indicates increase, - indicates decrease and 0 indicates no… · 2001-2022self-practice
ABC26PH0846 · For an isothermal free expansion of an ideal gas into vaccum, which one of the following set of values is correct? · 2001-2022self-practice
ABC26PH0847 · Which of the following thermodynamic relation(s) is/are correct? · 2001-2022self-practice
ABC26PH0848 · Two moles of an ideal gas is expanded isothermally and reversibly from 5 to 1 bar at 298 K . The change in the entropy (in J K-1 ) of the… · 2001-2022self-practice
ABC26PH0849 · The enthalpy of formation for CH4(g), C(g) and H(g) are -75,717 and 218 kJ mol-1, respectively. The enthalpy of the C-H bond in kJ mol-1 is… · 2001-2022self-practice
ABC26PH0850 · The Delta H for the reaction CO(g)+1 / 2 O2(g) CO2(g) at 400 K in kJ mol-1 is ____ . Given at 298 K: · 2001-2022self-practice
ABC26PH0851 · A straight line having a slope of - Delta U / R is obtained in a plot between · 2001-2022self-practice
ABC26PH0853 · At 298 K and 1 atm , the molar enthalpies of combustion of cyclopropane and propene are -2091 kJ mol-1 and -2058 kJ mol-1, respectively… · 2001-2022self-practice
ABC26PH0854 · Consider an isothermal reversible compression of one mole of an ideal gas in which the pressure of the system is increased from 5 atm to 30… · 2001-2022self-practice
ABC26PH0855 · The correct expression(s) for isothermal expansion of 1 mol of an ideal gas is(are) · 2001-2022self-practice
ABC26PH0856 · The value of Cv for 1 mol of N2 gas predicted from the principle of equipartition of energy, ignoring vibrational contribution, is ____ J… · 2001-2022self-practice
ABC26PH0857 · For the reaction H2(g)+1/2 O2(g) H2 O(l), the following information is given T=300 K arrayl Delta Ho=-285 kJ mol-1 S_H2 Oo(l)=70 J K-1… · 2001-2022self-practice
ABC26PH0858 · The thermodynamic criterion for spontaneity of a process in a system under constant volume and temperature and in the absence of any work… · 2001-2022self-practice
ABC26PH0859 · One mole of an ideal gas is subjected to an isothermal increase in pressure from 100 kPa to 1000 kPa at 300 K. The change in Gibbs free… · 2001-2022self-practice
ABC26PH0862 · The heat of formation of MgO at 300 K and 1 bar pressure is -600.60 kJ mol-1. The free energy (in kJ mol-1 ) of formation of MgO at 280 K… · 2001-2022self-practice
ABC26PH0863 · For an N-atom nonlinear polyatomic gas, the constant volume molar heat capacity Cv, m has the expected value of 3(N-1) R, based on the… · 2001-2022self-practice
ABC26PH0864 · The standard Gibbs free energy change for the reaction H2 O(g) H2(g)+1/2 O2(g) at 2500 K is +118 kJ mol-1. The equilibrium constant for the… · 2001-2022self-practice
ABC26PH0865 · At constant volume, 1.0 kJ of heat is transferred to 2 moles of an ideal gas at 1 atm and 298 K . The final temperature of the ideal gas is… · 2001-2022self-practice