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Chemistry
A Heat Capacity of the Calorimeter

A Heat Capacity of the Calorimeter

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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4) 7, ACTIVITY Specific heat of water ACTIVITY 1 microwave with short bursts until it reaches A Heat Capacity of the Calorimeter 20°. 6. Measure 50.0 mL of the hot water with a 1. Measure 50.0 mL of water with a graduated graduated cylinder. Place a thermometer in the cylinder and gently stir to get a constant reading. The temperature should be 75-80°C. Record this as the temperature of the hot water (T,) in Data Table 1. cylinder and pour into the inner foam cup of the calorimeter. This will be the cold water. 2. Place the foam Remember that 1 mL cup with the cold water inside the of water = 1g of water. 7. Quickly pour the 50.0 mL of hot water %3D beaker. into the cold water and start a timer. 8. Gently stir the mixed water with the thermometer, and record the temperature at 3. Stir the water with the thermometer until temperature is constant and record it as the initial temperature of the cold water (T) in 1 minute and then at 1-minute intervals for 10 minutes in Data Table 1. Data Table 1. 9. Discard the water, dry the cup with a paper 4. Fill a third foam cup 4 full with the hottest tap towel, and place it back in the calorimeter. water possible. 10. Repeat this activity, and collect a second set of data. 5. Take the temperature of the hot water. If the temperature is less than 80 °C, heat in a continued on next page Data Table 1: The Heat Capacity of the Calorimeter Time Trial 1 Trial 2 Trial 1 Trial 2 (min) Temp. °C Temp. °C (uu) 42.548.5 Initial temperature of cold water, T 24° 2니° 1. Initial temperature of warm water, T, 48 Temperature at time 0 from graph, T, 2. 42 3. 41.547.5 Heat lost by hot water =Cx AT xm 47 40.546 (hot water) Heat gained by cold water Aq, 5. = Cx AT x m (coldwater) %3D Heat gained by calorimeter in J Adical) 40 45.5 45 6. + Aqlcold water)! (hot water) Temperature change of the calorimeter %3D cal AT. C. Heat capacity (C) of the calorimeter in J/°C 8. 44,5 cal (cal) cal %3D 'by = 6. 38.5/448 Average heat capacity (C) of calorimeter in J/°C CAROLINA 01 38°
Transcribed Image Text:4) 7, ACTIVITY Specific heat of water ACTIVITY 1 microwave with short bursts until it reaches A Heat Capacity of the Calorimeter 20°. 6. Measure 50.0 mL of the hot water with a 1. Measure 50.0 mL of water with a graduated graduated cylinder. Place a thermometer in the cylinder and gently stir to get a constant reading. The temperature should be 75-80°C. Record this as the temperature of the hot water (T,) in Data Table 1. cylinder and pour into the inner foam cup of the calorimeter. This will be the cold water. 2. Place the foam Remember that 1 mL cup with the cold water inside the of water = 1g of water. 7. Quickly pour the 50.0 mL of hot water %3D beaker. into the cold water and start a timer. 8. Gently stir the mixed water with the thermometer, and record the temperature at 3. Stir the water with the thermometer until temperature is constant and record it as the initial temperature of the cold water (T) in 1 minute and then at 1-minute intervals for 10 minutes in Data Table 1. Data Table 1. 9. Discard the water, dry the cup with a paper 4. Fill a third foam cup 4 full with the hottest tap towel, and place it back in the calorimeter. water possible. 10. Repeat this activity, and collect a second set of data. 5. Take the temperature of the hot water. If the temperature is less than 80 °C, heat in a continued on next page Data Table 1: The Heat Capacity of the Calorimeter Time Trial 1 Trial 2 Trial 1 Trial 2 (min) Temp. °C Temp. °C (uu) 42.548.5 Initial temperature of cold water, T 24° 2니° 1. Initial temperature of warm water, T, 48 Temperature at time 0 from graph, T, 2. 42 3. 41.547.5 Heat lost by hot water =Cx AT xm 47 40.546 (hot water) Heat gained by cold water Aq, 5. = Cx AT x m (coldwater) %3D Heat gained by calorimeter in J Adical) 40 45.5 45 6. + Aqlcold water)! (hot water) Temperature change of the calorimeter %3D cal AT. C. Heat capacity (C) of the calorimeter in J/°C 8. 44,5 cal (cal) cal %3D 'by = 6. 38.5/448 Average heat capacity (C) of calorimeter in J/°C CAROLINA 01 38°
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