Thermodynamic Stoichiometry

Which of the following laws is fundamental to thermodynamic stoichiometry?

• Law of Conservation of Mass

• Law of Conservation of Energy

• Law of Definite Proportions

• Law of Multiple Proportions

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-7

In a chemical reaction, the enthalpy change is represented by which symbol?

What is the standard enthalpy change of formation for any element in its most stable form?

• 0 kJ/mol

• 100 kJ/mol

• -100 kJ/mol

• 50 kJ/mol

Which of the following is an example of an endothermic reaction?

• Combustion of methane

• Photosynthesis

• Respiration

• Neutralization of an acid and a base

Tags

NGSS.HS-PS1-4

In thermodynamic stoichiometry, what does the term 'system' refer to?

• The entire universe

• The part of the universe being studied

• The surroundings

• The environment

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-1

What is the unit of Gibbs free energy?

• Joules

• Kilojoules

• Calories

• Watts

Which equation represents the relationship between Gibbs free energy, enthalpy, and entropy?

What is the significance of a negative Gibbs free energy change in a reaction?

• The reaction is non-spontaneous

• The reaction is at equilibrium

• The reaction is spontaneous

• The reaction is endothermic

Which of the following best describes an exothermic reaction?

• Releases heat to the surroundings

• Absorbs heat from the surroundings

• Has no heat exchange

• Occurs only at high temperatures

Tags

NGSS.HS-PS1-4

In a calorimetry experiment, what is measured to determine the heat change of a reaction?

• Temperature change

• Pressure change

• Volume change

• Mass change

Tags

NGSS.HS-PS3-4