167 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.
ABC26PH0838 · One mole of a van der waals gas undergoes reversible isothermal transformation from an initial volume V1 to a final volume V2. The… · Thermodynamics – General
ABC26PH0840 · (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)… · Thermodynamics – General
ABC26PH0841 · The enthalpy of vaporization (Delta vapH) is zero at · Thermodynamics – General
ABC26PH0842 · The standard enthalpy of formation (Delta f H3000) at 1 bar and 300 K for the formation of CF2 ClCF2 Cl(g) from its constituent elements in… · Thermodynamics – General
ABC26PH0845 · The change in entropy for the following transformations is respectively: (+ indicates increase, - indicates decrease and 0 indicates no… · Thermodynamics – General
ABC26PH0846 · For an isothermal free expansion of an ideal gas into vaccum, which one of the following set of values is correct? · Thermodynamics – General
ABC26PH0847 · Which of the following thermodynamic relation(s) is/are correct? · Thermodynamics – General
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… · Thermodynamics – General
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… · Thermodynamics – General
ABC26PH0852 · Intensive variable(s) is/are · Thermodynamics – General
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. The… · Thermodynamics – General
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… · Thermodynamics – General
ABC26PH0855 · The correct expression(s) for isothermal expansion of 1 mol of an ideal gas is(are) · Thermodynamics – General
ABC26PH0856 · The value of Cv for 1 mol of N2 gas predicted from the principle of equipartition of energy, ignoring vibrational contribution, is ______ J… · Thermodynamics – General
ABC26PH0858 · The thermodynamic criterion for spontaneity of a process in a system under constant volume and temperature and in the absence of any work… · Thermodynamics – General
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… · Thermodynamics – General
ABC26PH0864 · The standard Gibbs free energy change for the reaction H2O(g) → H2(g) + 1/2O2(g) at 2500 K is +118 kJ mol-1. The equilibrium constant for… · Thermodynamics – General