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Use the Following Data to Calculate the Standard Heat (Enthalpy)

Question 69

Multiple Choice

Use the following data to calculate the standard heat (enthalpy) of formation, H°f , of manganese(IV) oxide, MnO2 (s) .
2MnO2(s) 2MnO(s) + O2(g) H = 264 kJ
MnO2(s) + Mn(s) 2MnO(s) H = -240 kJ


A) -504 kJ
B) -372 kJ
C) -24 kJ
D) 24 kJ
E) 504 kJ

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