Chemistry Quiz: Thermodynamics and Equilibrium

What term describes the Gross Energy Change in a chemical reaction?

• Entropy

• Enthalpy

• Free Energy

• Useful Energy

Which law of thermodynamics states that reactions that are spontaneous in one direction are nonspontaneous in the reverse direction?

• Zeroth Law of Thermodynamics

• Third Law of Thermodynamics

• Second Law of Thermodynamics

• First Law of Thermodynamics

What is the formula for Gibbs Free Energy (∆G) in relation to Enthalpy (∆H) and Entropy (∆S)?

• ∆G = ∆H * ∆S

• ∆G = ∆H / ∆S

• ∆G = ∆H - T∆S

• ∆G = ∆H + T∆S

Which type of reaction has a positive change in entropy (∆S)?

• Exothermic

• Spontaneous

• Endothermic

• Nonspontaneous

What is the relationship between entropy and disorder?

• Entropy decreases as disorder increases

• Entropy increases as disorder increases

• Entropy and disorder are inversely proportional

• Entropy is not related to disorder

In which direction does a spontaneous process occur?

• From high probability states to low probability states

• From low probability states to high probability states

• From disordered states to ordered states

• From ordered states to disordered states

What is the formula for calculating Gibbs Free Energy at equilibrium?

• ∆G = 0

• ∆G = ∆S

• ∆G = ∆H - T∆S

• ∆G = ∆H

Which law of thermodynamics describes the conservation of energy in a system?

• Zeroth Law of Thermodynamics

• Third Law of Thermodynamics

• Second Law of Thermodynamics

• First Law of Thermodynamics

What is the term used to describe the random or disorganized energy in a system?

• Entropy

• Useful Energy

• Free Energy

• Enthalpy

Which type of reaction has a negative change in Gibbs Free Energy (∆G)?

• Spontaneous

• Nonspontaneous

• Exothermic

• Endothermic