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# Lab Data

In: Science

Submitted By jlaf1169
Words 1109
Pages 5
Data/Results

Specific Heat Capacity of a Metal (Copper)

| Trial 1 | Trial 2 | Mass of metal (g) | 11.6813 g | 12.1214 g | Mass of empty calorimeter (g) | 4.7507g | 4.7507 g | Mass of calorimeter & water (g) | 24.2425 g | 24.2422 g | Mass of water (g) | 24.2425-4.7507=19.4918 g | 24.2422-4.7507=19.4915 g | Volume added to calorimeter (mL) | 20.0 mL | 20.0 mL | 1 | Time (s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240 | 270 | 300 | 330 | 360 | 390 | 420 | 1 | Temp(°C) | 26.1 | 26.2 | 26.3 | 26.3 | 26.2 | 26.2 | 26.2 | 26.9 | 27.1 | 27.4 | 27.2 | 27.2 | 27.1 | 27.1 | 27.1 | | | | | | | | | | | | | | | | | | 2 | Time (s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240 | 270 | 300 | 330 | 360 | 390 | 420 | 2 | Temp(°C) | 24.0 | 24.1 | 24.2 | 24.2 | 24.2 | 24.2 | 24.2 | 28.0 | 27.9 | 27.8 | 27.7 | 27.7 | 27.7 | 27.6 | 27.6 | Change in temperature of the water (°C) | 1.0°C | 3.6°C | Energy gained by the water (J) | 81.552J | 293.59J | Change in temperature of the metal (°C) | -72.9°C | -72.4°C | Calculated specific heat capacity (J/g°C) | 0.0958 J/g°C | 0.335 J/g°C | Molar mass approximation (g/mol) | 261.02g/mol | 74.73g/mol | Percent error of specific heat capacity (%) | 75.1% | 13.0% | Percent error of molar mass (%) | -310.76% | -17.60% |

Enthalpy of Neutralization (Nitric Acid)

| Trial 1 | Trial 2 | Volume of acid (mL) | 50.0 mL | 50.0 mL | Concentration of acid (M) | 1.1 M | 1.1 M | Volume of NaOH (mL) | 50.0 mL | 50.0 mL | Concentration of NaOH (M) | 1.0 M | 1.0 M | 1 | Time(s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 200 | 220 | 240 | 260 | 280 | 300 | 320 | 340 | 360 | 380 | 400 | 420 | 1 | Temp(°C) | 23.5 | 23.4 | 23.4 | 23.4 | 23.4 | 23.4 | 23.5 | 30.5 | 30.4 | 30.4 | 30.4 | 30.4 | 30.3 | 30.3 | 30.2 | 30.2 | 30.1 | 30.1 | 30.0 | | | | | | | | | | | | | | | | | | | | | | 2 | Time(s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 200 | 220 | 240 | 260 | 280 | 300 | 320 | 340 | 360 | 380 | 400 | 420 | 2 | Temp(°C) | 23.2 | 23.3 | 23.3 | 23.3 | 23.3 | 23.3 | 23.3 | 30.0 | 30.1 | 30.0 | 30.0 | 30.0 | 30.0 | 29.9 | 29.9 | 29.9 | 29.8 | 29.8 | 29.8 | Mass of the Calorimeter+Lid+Solution (g) | 106.4362 g | 107.5763 g | Mass of the Calorimeter+Solution (g) | 105.102 g | 106.3587 g | Mass of the Calorimeter (g) | 4.1598 g | 4.1601 g | Change in temperature of the solution (°C) | 6.5°C | 6.6°C | Volume of the final solution (mL) | 100.0mL | 100.0mL | Mass of the final solution (g) | 100.0g | 100.0g | Comparison % with measured mass (%) | -0.94% | -2.2% | Energy released (J) | 2700J | 2800J | # of moles of OH- | 0.050 moles | 0.050 moles | # of moles of H2O | 0.050 moles | 0.050 moles | Heat of Neutralization per mole of H2O (J/mol) | -55kJ/mol | -56kJ/mol | Percent errors (%) | 4.18% | 1.50% |

Enthalpy of Neutralization (Hydrochloric Acid)

| Trial 1 | Trial 2 | Volume of acid (mL) | 50.0 mL | 50.0 mL | Concentration of acid (M) | 1.1 M | 1.1 M | Volume of NaOH (mL) | 50.0 mL | 50.0 mL | Concentration of NaOH (M) | 1.0 M | 1.0 M | 1 | Time(s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 200 | 220 | 240 | 260 | 280 | 300 | 320 | 340 | 360 | 380 | 400 | 420 | 1 | Temp(°C) | 23.1 | 23.2 | 23.2 | 23.1 | 23.2 | 23.1 | 23.1 | 29.6 | 29.6 | 29.6 | 29.5 | 29.5 | 29.5 | 29.5 | 29.4 | 29.4 | 29.3 | 29.3 | 29.3 | | | | | | | | | | | | | | | | | | | | | | 2 | Time(s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 200 | 220 | 240 | 260 | 280 | 300 | 320 | 340 | 360 | 380 | 400 | 420 | 2 | Temp(°C) | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 29.4 | 29.4 | 29.3 | 29.3 | 29.3 | 29.2 | 29.2 | 29.2 | 29.2 | 29.1 | 29.1 | 29.1 | Mass of the Calorimeter+Lid+Solution (g) | 104.0269 g | 107.5763 g | Mass of the Calorimeter+Solution (g) | 102.8643 g | 106.3587 g | Mass of the Calorimeter (g) | 4.8650 g | 4.1601 g | Change in temperature of the solution (°C) | 6.2 C | 6.2°C | Volume of the final solution (mL) | 100.0mL | 100.0mL | Mass of the final solution (g) | 100.0g | 100.0g | Comparison % with measured mass (%) | 2.0% | 3.0% | Energy released (J) | 2500J | 2500J | # of moles of OH- | 0.050 moles | 0.050 moles | # of moles of H2O | 0.050 moles | 0.050 moles | Heat of Neutralization per mole of H2O (kJ/mol) | -50kJ/mol | -50kJ/mol | Comparison of ΔHs between HCl and HNO3 (%) | -7.39% | -12.2% (HNO3 larger) | Percent Error (%) | 11.27% | 12.21% |

Enthalpy of Solution (Salt A)

| Trial 1 | Trial 2 | Unknown salt (letter) | A | A | Mass of salt (g) | 2.5040 g | 2.5032 g | Mass of empty calorimeter (g) | 5.2695 g | 5.5702 g | Volume of water transferred (mL) | 20.0 mL | 20.0 mL | Mass of calorimeter & water (g) | 24.9088 g | 24.4091 g | 1 | Time(s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 200 | 220 | 240 | 260 | 280 | 300 | 320 | 340 | 360 | 380 | 400 | 420 | 440 | 460 | 480 | 1 | Temp(°C) | 24.2 | 24.3 | 24.3 | 24.3 | 24.2 | 24.3 | 20.9 | 23.7 | 23.7 | 23.7 | 23.6 | 23.6 | 23.6 | 23.6 | 23.5 | 23.6 | 23.6 | 23.6 | 23.5 | 23.6 | 23.5 | 23.5 | | | | | | | | | | | | | | | | | | | | | | | | | 2 | Time(s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 200 | 220 | 240 | 260 | 280 | 300 | 320 | 340 | 360 | 380 | 400 | 420 | 440 | 460 | 480 | 2 | Temp(°C) | 23.2 | 23.3 | 23.2 | 23.2 | 23.2 | 23.3 | 23.2 | 19.8 | 19.8 | 19.8 | 19.9 | 19.9 | 20.0 | 20.1 | 20.1 | 20.1 | 20.1 | 20.1 | 20.1 | 20.2 | 20.2 | 20.2 | Change in temperature of the solution (°C) | -0.7°C | -3.0°C | Energy released by the solution (J) | -56J | -230J | Enthalpy of dissolution per mole of salt(kJ/mol) | 3.764kJ/mol | 15.548kJ/mol | Percent Error (%) | 81.49% | 23.52% |

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