Thermodynamics, Kinetics, and Equilibrium

Which of the following is correct about a closed system?

• Both matter and energy can be exchanged

• Only energy can be exchanged, not matter

• Only matter can be exchanged

• Both matter and energy cannot be exchanged

State "True" or "False" (Yes, the first letter needs to be capitalized.): Thermodynamic potentials are quantitative measures of the stored energy in a system.

The measurement of energy in a thermodynamic system is _____

• Entropy

• None of the above

• Enthalpy

• Equilibrium

At constant temperature and pressure, the direction of any chemical reaction is the one where _____ decreases.

• Entropy

• Enthalpy

• Gibbs free energy

• All of the above

Bonus question: Who is the most beautiful?

• Shan

• Steve

• Vicky

• Ms. Parker

Answer explanation

Ms. Parker is the prettiest, of course. There shouldn't be a doubt for you to answer this.

Entropy decreases during...

• Crystallization of sucrose from solution

• Rusting of iron

• Melting of ice

• Vaporization

Which side of the reaction will the equilibrium shift toward if pressure increase in the reaction "N₂ (g) + 3H₂ (g) ↔ 2NH₃ (g) + Heat"?

• ⬅️

• ⬆️

• ➡️

• 🔄

• constant

Which of the following are NOT true?

• When pressure increases, equilibrium shifts towards the side with fewer moles.

• When pressure decreases, equilibrium shifts towards the side with fewer moles.

• When pressure decreases, equilibrium shifts towards the side with more moles.

• When pressure decreases, equilibrium shifts towards the side with fewer moles.

“Condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.” State the term this statement is defining (all in lower case).

Just a fun riddle:: Why do people love gold?

Answer explanation

Correct Answer: Because they are AU-some.