Thermodynamics Test 3

An ideal gas expands adiabatically into a vacuum. Which of the following is true?

Which of the following is a state function?

For a certain process, the volume of a gas decreases while the temperature remains constant. What can be said about the work done on the gas?

The bond enthalpy of H-H is 436 kJ/mol and that of Cl-Cl is 242 kJ/mol. The bond enthalpy of H-Cl is 431 kJ/mol. What is the enthalpy of the reaction H2(g) + Cl2(g) -> 2HCl(g)?

In an isobaric process, which of the following remains constant?

A process has a positive enthalpy change ($DeltaH>0$) and a positive entropy change ($DeltaS>0$). Under what condition will this process be spontaneous?

In an adiabatic expansion of a gas against an external pressure, which of the following is true?

The maximum amount of useful work a system can perform at a constant temperature and pressure is equal to the decrease in its:

A chemical reaction has a negative change in enthalpy ($\Delta H<0$) and a negative change in entropy ($\Delta S<0$). Under what conditions will the reaction be spontaneous?

The efficiency of a Carnot engine is 50%. If the temperature of the cold reservoir is 300 K, what is the temperature of the hot reservoi