Ammonia (NH3) boils at-33 °C; at this temperature it has a
Chapter 3, Problem 107AE(choose chapter or problem)
Problem 107AE
Ammonia (NH3) boils at-33 °C; at this temperature it has a density of 0.81 g/cm3. The enthalpy of formation of NH3(g) is-46.2 kJ/mol, and the enthalpy of vaporization of NH3(l) is 23.2 kJ/mol. Calculate the enthalpy change when 1 L of liquid NH3 is burned in air to give N2(g) and H2O(g). How does this compare with ΔH for the complete combustion of 1 L of liquid methanol, CH3OH(l)? For CH3OH(l), the density at 25 °C is 0.792 g/cm3, and ΔHf° =-239 kJ/mol.
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