Thermochemistry 1 Name Tbp AH fus ΔΗ C solid C liquid C gas vap (°C) (°C) (J/g) (kJ/mol) (J/ go°C) (J/ g•°C) (J/ go°C) H2O Water 0.0 100.0 333.55 40.65 2.06 4.184 1.87 HC2H3O2 Acetic Acid CH3CH2OH Ethanol 16.0 118.1 194.8 23.7 N/A 2.05 1.06 -117 78 109 38.56 0.97 2.3 0.95 C solid (J/ go°C) 0.902 Metal Aluminum 0.385 Соpper Iron 0.444 Silver 0.240 Zinc 0.39 1. Calculate the energy released when 25 g of water cools from a gas 100.0 °C to a liquid at 56.5 °C. F-I Q= m CAT =(259)(1.87 J/9.°C)( 5u5'c- 10.0C) 2. What mass of water in grams can be heated from 25.0 °C to 33.5 °C by the heat energy released when a 50.0 g chunk of aluminum cools from 100.0 °C to 33.5 °C? 3. Calculate the heat required to convert 40.0 g of acetic acid, HC2H;O2, from a solid at 16.0 °C to a liquid at 99.9 °C. CS Scanned with CamScanner
Thermochemistry 1 Name Tbp AH fus ΔΗ C solid C liquid C gas vap (°C) (°C) (J/g) (kJ/mol) (J/ go°C) (J/ g•°C) (J/ go°C) H2O Water 0.0 100.0 333.55 40.65 2.06 4.184 1.87 HC2H3O2 Acetic Acid CH3CH2OH Ethanol 16.0 118.1 194.8 23.7 N/A 2.05 1.06 -117 78 109 38.56 0.97 2.3 0.95 C solid (J/ go°C) 0.902 Metal Aluminum 0.385 Соpper Iron 0.444 Silver 0.240 Zinc 0.39 1. Calculate the energy released when 25 g of water cools from a gas 100.0 °C to a liquid at 56.5 °C. F-I Q= m CAT =(259)(1.87 J/9.°C)( 5u5'c- 10.0C) 2. What mass of water in grams can be heated from 25.0 °C to 33.5 °C by the heat energy released when a 50.0 g chunk of aluminum cools from 100.0 °C to 33.5 °C? 3. Calculate the heat required to convert 40.0 g of acetic acid, HC2H;O2, from a solid at 16.0 °C to a liquid at 99.9 °C. CS Scanned with CamScanner
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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Transcribed Image Text:Thermochemistry 1
Name
AH vap
C solid
C liquid
(J/ gº°C)
C gas
(J/ g•°C)
Tbp
AH fus
Тр
(°C)
(J/ g•°C)
(°C)
(J/g)
(kJ/mol)
H2O
0.0
100.0
333.55
40.65
2.06
4.184
1.87
Water
HC2H3O2
Acetic Acid
16.0
118.1
194.8
23.7
N/A
2.05
1.06
CH3CH2OH
Ethanol
-117
78
109
38.56
0.97
2.3
0.95
C solid (J/ go°C)
0.902
Metal
Aluminum
0.385
Соpper
Iron
0.444
Silver
0.240
Zinc
0.39
1. Calculate the energy released when 25 g of water cools from a gas 100.0 °C to a liquid at 56.5 °C.
F-I
Q= m CAT
-(259)(1.87 5/9-2)( 5Ls'c- 10.0 2)
J 2. What mass of water in grams can be heated from 25.0 °C to 33.5 °C by the heat energy released when a 50.0
g chunk of aluminum cools from 100.0 °C to 33.5 °C?
3. Calculate the heat required to convert 40.0 g of acetic acid, HC2H3O2, from a solid at 16.0 °C to a liquid at 99.9 °C.
CS Scanned with CamScanner
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