CHEM101-Unit-6-Quiz-: Thermochemistry and Thermodynamics

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1. What is the value of the standard enthalpy of formation for any element under standard conditions?

A. 273 J/mol B. 0.24 J/mol C. 4.18 J/mol D. 0 J/mol

2. Which of the following represents an increase in entropy?

A. freezing of water B. boiling of water C. crystallization of salt from a supersaturated solution D. the reaction 2 NO(g) ! N2O2(g)