8
QuizMultiple Choice
Thermochemical Equations
Question 8 of 10 • SS - TX - Chemistry B
Consider the reaction.Standard Enthalpies of FormationSubstanceDHf (kJ/mol)C2 H2 (g)226.73CaCO3 (s)–1206.92CaO (s)–635.09CO (g)–110.525CO2 (g)–393.509H 2 O (I)–285.8H 2 O (g)–241.818C (s), diamond1.895C (s), graphite0.0Based on the equation and the information in the table, what is the enthalpy of the reaction? Use .
Answer
A
–453.46 kJB
–226.73 kJC
226.73 kJD
453.46 kJ