Question

Using the Heat of Reaction (Hrxn) to Find Amounts Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. In the simplest case, ethene (C2H4) and H2 form ethane (C2H6). If 163 kJ is given off per mole of C2H4 reacting, how much heat is released when 14.9 kg of C2H6 forms? kJ?

Answer 1

C2H4 H2 C2H6, AH163 kJ Moles of C2H4 moles of C2H6 mass/molar mass of C2H6 14.9 x 1000/30.07 495.51 mol Heat released s moles of 495.51 x 163 - 8.08 x 104 kJ C2H4 x (-AH)