Answer to Question #57952 in Inorganic Chemistry for XM

Question #57952
1. From the following heats of reactions that are given: C(s) + O2 (g) --> CO2 (g) H = -393.5 kJ 2H2 (g) + O2 (g)--> 2H2O (l) H = -571.6 kJ 2C2H2 (g) + 5 O2 (g) --> 4CO2 (g) + 2H2O (l) H = -2598.8 kJ Calculate the heat of the reaction of the following equation: 2C(s) + H2 (g) --> C2H2 (g) 2. Calculate the Hrxn for the following reaction: 2Al(s) + Fe2O3(s) --> 2Fe (s) + Al2O3(s) Given that: I. 2Al2O3 (s) --> 4Al (s) + 3O2(g) H= + 3339.6kJ II. 4Fe(s) + 3O2(g) --> 2 Fe2O3(s) H= - 1644.4kJ 3. Nitrogen can exists as N2O, NH3, NO and NO2. In which compound is nitrogen in its lowest oxidation state?
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