exp11postlab - 2 (aq) + 2H + (aq) Initial Temp ( C) 100 200...

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Part A: Calculation of the Heat Capacity of the Calorimeter Trial 1 20.21 Average Heat Capacity 20.13 J/ C Temp of Hot Water 70.71 Standard Deviation 6.1 J/ C Final Temp 44.24 Change in Temp 24.03 Heat Capacity (J/ C) 24.44 Trial 2 Initial Temp ( C) 19.95 Temp of Hot Water 58.48 ΔH (kJ/mol) -623.97 Final Temp 40.19 Change in Temp 20.24 Heat Capacity (J/ C) -20.15 Trial 3 Initial Temp ( C) 19.95 Temp of Hot Water 57.00 Final Temp 37.80 Change in Temp 17.85 Heat Capacity (J/ C) 15.82 Sample Calculation Initial Temp ( C)
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Part B: Reactions with Magnesium Section 1 Time (s) Temp ( C) Balanced Equation (Mg + HCl) 60 28.02 Mass of Mg (g) 0.15 120 28.09 Moles of Mg (mol) 0.01 180 28.00 [HCl] (M) 1 ΔH (kJ) -3.08 240 27.86 Volume HCl (mL) 100 ΔH (kJ/mol) -489.42 300 27.77 Moles of HCl (mol) 0.1 360 27.79 21.07 420 27.63 Final Temp ( C) 28.09 480 27.60 Change in Temp ( C) 7.02 540 27.47 600 27.37 Enthalpy of Reaction 660 27.30 720 27.26 780 27.09 840 27.09 Mg (s) + 2HCl (aq)     MgCl
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Unformatted text preview: 2 (aq) + 2H + (aq) Initial Temp ( C) 100 200 300 400 500 600 700 800 900 26.40 26.60 26.80 27.00 27.20 27.40 27.60 27.80 28.00 28.20 Temp vs. Time Time (s) Temp (C) Section 2 Time (s) Temp ( C) Balanced Equation (Mg + HCl) 60 24.23 Mass of MgO (g) 0.72 120 26.35 Moles of MgO (mol) 0.02 180 27.19 [HCl] (M) 1.00 H-2.72 240 27.21 Volume HCl (mL) 100.0 H (kJ/mol)-151.29 300 27.16 Moles of HCl (mol) 0.10 360 27.14 21.00 420 27.05 Final Temp ( C) 27.21 480 27.02 Change in Temp ( C) 6.21 540 26.95 600 26.85 Enthalpy of Reaction 660 26.77 MgO (s) + 2HCl (aq) MgCl 2 (aq) + H 2 O (l) Initial Temp ( C) Time (s) 22.50 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.50 27.00 27.50 Time vs. Temp Time (s) Temp (C) 100 200 300 400 500 600 Time (s) 4.18 700...
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This note was uploaded on 09/12/2011 for the course CHEM 1310 taught by Professor Cox during the Fall '08 term at Georgia Institute of Technology.

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exp11postlab - 2 (aq) + 2H + (aq) Initial Temp ( C) 100 200...

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