In an experiment, a 0.4494 g sample of pyrene ( C16H10) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.327 × 10³ g of water. During the combustion the temperature increases from 24.64 to 27.30 °C. The heat capacity of water is 4.184 J·g¯¹. C¹. 0 The heat capacity of the calorimeter was determined in a previous experiment to be 801.8 J. ˚C-¹. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of pyrene based on these data. C16H10 (8) + (37/2)O2(g) → 5H₂O(1) + 16CO2 (g) + Energy kJ/mol Molar Heat of Combustion =
In an experiment, a 0.4494 g sample of pyrene ( C16H10) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.327 × 10³ g of water. During the combustion the temperature increases from 24.64 to 27.30 °C. The heat capacity of water is 4.184 J·g¯¹. C¹. 0 The heat capacity of the calorimeter was determined in a previous experiment to be 801.8 J. ˚C-¹. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of pyrene based on these data. C16H10 (8) + (37/2)O2(g) → 5H₂O(1) + 16CO2 (g) + Energy kJ/mol Molar Heat of Combustion =
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
Chapter6: Thermochemistry
Section: Chapter Questions
Problem 112AE: In a bomb calorimeter, the reaction vessel is surrounded by water that must be added for each...
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Transcribed Image Text:In an experiment, a 0.4494 g sample of pyrene (
C16H10) is burned completely in a bomb calorimeter. The calorimeter
is surrounded by
1.327 × 10³ g of water. During the combustion the temperature
increases from 24.64 to 27.30 °C. The heat capacity of water is
4.184 J·g¯¹. C¹.
0
The heat capacity of the calorimeter was determined in a previous
experiment to be 801.8 J. ˚C-¹.
Assuming that no energy is lost to the surroundings, calculate the
molar heat of combustion of pyrene based on these data.
C16H10 (s) + (37/2)O2(g) → 5H₂O(1) + 16CO2 (9) + Energy
Molar Heat of Combustion
=
kJ/mol
Transcribed Image Text:A bomb calorimeter, or a constant volume
calorimeter, is a device often used to determine
the heat of combustion of fuels and the energy
content of foods.
Ignition
wires
heat
sample
Water
Stirrer
Thermometer
Insulated Sample Burning
outside dish
chamber
Steel
sample bomb
Combustion (bomb) calorimeter.
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