AP Chemistry Gibbs

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 Gibbs free energy change?

• KJ/mol

• N/m

• J/mol

• mol/dm^3

How does Gibbs free energy change tell us a reaction is feasible?

• When G < 0

• When G > 0

Tags

NGSS.HS-PS1-4

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

• Negative

• No Change

• Positive

Tags

NGSS.HS-PS3-4

What is the standard unit for change in entropy?

• J/mol

• J/K/mol

• Pa/s

• W/K

What is the standard unit for change in enthalpy?

• J/dm^3

• N/s

• J/mol

• J/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

Tags

NGSS.HS-PS1-5

When ionic salt dissolves in water what happens to entropy?

• Increase

• No change

• Decrease

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