CHEM 120 Exam 6 Question and
answers verified to pass 2025
True or False
A aqueous solution of AgBr(s) is at equilibrium. If more AgBr(s) were added,
the concentration of Ag+ ions in solution would increase in accordance with
LeChatlier's principle. - correct answer ✔False
True or False
Entropy, like enthalpy, is a form of energy. - correct answer ✔False
True or False
Exothermic reactions release heat but do not create energy. - correct answer
✔True
True or False
The entropy of any molecule must be > 0 at all temperatures above 0 Kelvin. -
correct answer ✔True
True or False
The second law of thermodynamics states that work cannot be done by a
spontaneous reaction. - correct answer ✔False
, True or False
For a reaction occurring in a coffee-cup calorimeter, the solvent is considered
part of the surroundings. - correct answer ✔True
True or False
Work is a state function - correct answer ✔False
True or False
All work energy can be converted into heat energy - correct answer ✔True
True or False
The second law of thermodynamics is statistical in nature. - correct answer
✔True
True or False
The third law of thermodynamics states the energy can neither be created nor
destroyed. - correct answer ✔False
True or False
answers verified to pass 2025
True or False
A aqueous solution of AgBr(s) is at equilibrium. If more AgBr(s) were added,
the concentration of Ag+ ions in solution would increase in accordance with
LeChatlier's principle. - correct answer ✔False
True or False
Entropy, like enthalpy, is a form of energy. - correct answer ✔False
True or False
Exothermic reactions release heat but do not create energy. - correct answer
✔True
True or False
The entropy of any molecule must be > 0 at all temperatures above 0 Kelvin. -
correct answer ✔True
True or False
The second law of thermodynamics states that work cannot be done by a
spontaneous reaction. - correct answer ✔False
, True or False
For a reaction occurring in a coffee-cup calorimeter, the solvent is considered
part of the surroundings. - correct answer ✔True
True or False
Work is a state function - correct answer ✔False
True or False
All work energy can be converted into heat energy - correct answer ✔True
True or False
The second law of thermodynamics is statistical in nature. - correct answer
✔True
True or False
The third law of thermodynamics states the energy can neither be created nor
destroyed. - correct answer ✔False
True or False
