Chemical Thermodynamics Questions

15 Practice QuestionsStart Practicing Now

[Medium]According to Trouton's rule, the entropy of vaporization (ΔSvap) for most liquids at their normal boiling point is approximately:...
[Easy]In an adiabatic process, which of the following is true?...
[Medium]For an ideal gas undergoing isothermal expansion, which statement is correct?...
[Easy]According to the second law of thermodynamics, in an isolated system:...
[Easy]A Carnot engine operates between 400 K and 300 K. Its efficiency is:...
[Easy]The enthalpy of neutralization of a strong acid by a strong base is approximately:...
[Easy]The relation between Cp and Cv for an ideal gas is:...
[Medium]Given bond enthalpies: C-H = 413 kJ/mol, Cl-Cl = 242 kJ/mol, C-Cl = 328 kJ/mol, H-Cl = 431 kJ/mol. The enthalpy change for CH₄ + Cl₂ → CH₃Cl + HCl is:...
[Easy]The standard enthalpy of formation of an element in its most stable state at 298 K and 1 atm is:...
[Easy]A 50 g sample of water at 20°C is mixed with 50 g of water at 80°C. The final temperature of the mixture is:...
[Hard]Given: C(s) + O₂(g) → CO₂(g), ΔH = −394 kJ; 2CO(g) + O₂(g) → 2CO₂(g), ΔH = −566 kJ. The enthalpy of formation of CO(g) is:...
[Easy]Which of the following processes is accompanied by an increase in entropy?...
[Easy]A system absorbs 250 J of heat and does 150 J of work. The change in internal energy of the system is:...
[Medium]The enthalpy of combustion of methane at 298 K is −890 kJ mol⁻¹. What is the amount of heat released when 5.0 g of methane is completely burnt at this...
[Medium]For a reaction to be spontaneous at all temperatures, which condition must be satisfied?...