Enthalpy and Entropy

the total heat content of a system

• enthalpy

• entropy

• temperature

• thermometer

Tags

NGSS.HS-PS3-4

the degree of disorder or randomness in a system

• enthalpy

• entropy

• temperature

• heat

If any, is the entropy change of this reaction positive or negative?

• Negative

• No Change

• Positive

Tags

NGSS.HS-PS3-4

How does increasing temperature affect entropy and why?

• Entropy decreases as kinetic energy decreases, so particles are more stable

• Entropy increases as kinetic energy increases, so energy arrangements of particles increase

• Entropy decreases as kinetic energy increases, so level of disorder decreases

• Entropy increases as kinetic energy decreases, so rate of reaction decreases

What is the formula for Gibbs free energy?

• G = H * TS

• G = H + TS

• G = H / TS

• G = H - TS

What is the standard unit for change in entropy?

• J/mol

• J/K/mol

• Pa/s

• W/K

When change in entropy is negative, how does increase in temperature affect the reaction?

• Reaction becomes less feasible

• Reaction becomes more feasible

• No change

When change in entropy is positive, how does increase in temperature affect the reaction?

• Reaction becomes less feasible

• Reaction becomes more feasible

• No change

When does entropy in a reaction increase?

• Change from solid to liquid

• Change from liquid to solid

• Change from liquid to gas

• Change from gas to liquid

What is the relationship between enthalpy (H) and entropy (S) in the Gibbs free energy equation?

• G = H + TS

• G = H - TS

• G = H * TS

• G = H / TS