Deck 16: Thermodynamics

Question 1

An _____ reaction is a spontaneous reaction in which the standard change in free energy is negative. Outcome # 3) DOK 1)

A) exergonic
B) endergonic
C) exothermic

Answer 1

exergonic

Question 2

What is the ∆G° if ∆H° is +58.7 kJ and ∆S° is +129 J/K? Outcome # 11) DOK 1)

A) +20.2 kJ
B) -20.2 kJ
C) +55.5 kJ

Answer 2

+20.2 kJ

Question 3

What is the ∆S° if the ∆H° is +88.00 kJ and ∆G ° is +11.21 kJ? Outcome # 11) DOK 1)

A) -258 J
B) +258 J
C) +0.258 J

Answer 3

+258 J

Question 4

What is the ∆S° if the ∆H° is +48.90 kJ and ∆G ° is +19.01 kJ? Outcome # 11) DOK 1) Paired item 1)

A) -0.1003 J
B) +0.1003 J
C) +100.3 J

Question 5

An _____ reaction is a nonspontaneous reaction in which the standard change in free energy is positive. Outcome # 3) DOK 1)

A) exergonic
B) endergonic
C) exothermic

Question 6

At what temperature are the standard Gibbs free energy of formations reported? Outcome # 11) DOK 1)

A) 20.0 °C
B) 0 °C
C) 25.0 °C

Question 7

What is the ∆G° if ∆H° is +72.7 kJ and ∆S° is +112 J/K? Outcome # 11) DOK 1) Paired item 1)

A) -39.3 kJ
B) +39.3 kJ
C) +70.0 kJ