Experiment 15 Heat Of Combustion Calcium Purpose In Chem 150 You Learned About The Additive Nature Of Reaction Heats 1 (30.51 KiB) Viewed 34 times
Experiment 15 Heat Of Combustion Calcium Purpose In Chem 150 You Learned About The Additive Nature Of Reaction Heats 2 (14.37 KiB) Viewed 34 times
Experiment 15: Heat of Combustion - Calcium PURPOSE In CHEM 150, you learned about the additive nature of reaction heats as you confirmed Hess's Law. In this experiment, you will use this principle as you determine a heat of reaction that would be difficult to obtain by direct measurement-the heat of combustion of calcium. a BACKGROUND The reaction is represented by the equation (4) Can + 1/2O2(g) This equation can be obtained by combining equations (1), (2), and (3): (1) CaO (s) + 2 HCl(aq) → CaCl2 lac) + H2O (4) CaOn (2) Ca (s + 2 HCl(aq) → CaCl2 (aq) + H2 (8) (3) H2 + 1/2O2(0 → H2O AH=-285.9 ks
1. In the space provided below, combine equations (1), (2), and (3) to obtain equation (4). Also, fill in these equations in your data sheet in box 10. (1) (2) (3) (4)
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