lab 8 - Brandon Smith 4/9/08 Chem 107 533 Experiment #07:...

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4/9/08 Chem 107 533 Experiment #07: A. SUMMARY In this experiment we are trying to find the heat of the reaction for the combustion of Mg metal. Because it would be very difficult to measure the heat given off in a calorimeter, we use two more simple reactions. By combining the results of the two reactions, with the known value of heat formation of water we will be able to obtain a value for Δ H. B. RESULTS Part A OBJECT MASS (g) Dry Calorimeter 4.32 Calorimeter with water (40mL) 41.77 Total 87.55 Part B OBJECT MASS (g) Dry Calorimeter 4.25 Calorimeter with HCl (50mL, 1.0M) 52.74 Mg 0.1799 Part C OBJECT MASS (g) Dry Calorimeter 4.22 Calorimeter with HCl (50 mL, 1.0M) 52.64 MgO 0.429 C. GRAPHS AND CALCULATIONS (Reaction 1) Mg (s) + ½ O2 MgO (s) (Reaction 2) Mg (s) + 2 HCl (aq) MgCl2 (aq) + H2 (g) (Reaction 3) MgO (s) + 2 HCl MgCl2 (aq) + H2O (l) (Reaction 4) H2 (g) + ½ O2 (g) H2O (l) Part A. ΔT
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lab 8 - Brandon Smith 4/9/08 Chem 107 533 Experiment #07:...

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