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Identify what a coffee cup calorimeter measures.


A) measures ΔH for aqueous solutions
B) measures ΔE for hydrolysis reactions
C) measures ΔH for reduction solutions
D) measures ΔT for combustion solutions
E) measures ΔE for oxidation reactions

F) B) and C)
G) A) and E)

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Calculate the work,w,gained or lost by the system when a gas expands from 15 L to 40 L against a constant external pressure of 1.5 atm.1 L ∙ atm = 101 J


A) -6.1 kJ
B) -3.8 kJ
C) +3.8 kJ
D) +6.1 kJ

E) B) and C)
F) A) and C)

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It takes 11.2 kJ of energy to raise the temperature of 145 g of benzene from 23.0°C to 68.0°C.What is the specific heat of benzene?


A) 1. 14 J/(g ∙ °C)
B) 1.72 J/(g ∙ °C)
C) 3.48 J/(g ∙ °C)
D) 5. 25 J/(g ∙ °C)

E) A) and B)
F) B) and C)

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Why are the standard heats of formation for elements in their most stable form assigned a value of "0"?

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We can't measure absolute enthalpy,but w...

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Identify a substance that is NOT in its standard state.


A) O2
B) Zn
C) H
D) O3
E) Xe

F) None of the above
G) A) and E)

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