Ignition wires heat Thermometer Stirrer A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. sample Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter. Water In the laboratory a student burns a 0.429-g sample of biphenyl (C12H10) in a bomb calorimeter containing 1170. g of water. The temperature increases from 26.00 °C to 29.00 °C. The heat capacity of water is 4.184 J gloc-!. The molar heat of combustion is -6251 kJ per mole of biphenyl. C12H10(s) + 29/2 O2(g) 12 CO2(g) + 5 H20(1) + Energy Calculate the heat capacity of the calorimeter. Insulated outside chamber Sample dish Burning sample Steel bomb heat capacity of calorimeter = J/°C Combustion (bomb) calorimeter.
Ignition wires heat Thermometer Stirrer A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. sample Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter. Water In the laboratory a student burns a 0.429-g sample of biphenyl (C12H10) in a bomb calorimeter containing 1170. g of water. The temperature increases from 26.00 °C to 29.00 °C. The heat capacity of water is 4.184 J gloc-!. The molar heat of combustion is -6251 kJ per mole of biphenyl. C12H10(s) + 29/2 O2(g) 12 CO2(g) + 5 H20(1) + Energy Calculate the heat capacity of the calorimeter. Insulated outside chamber Sample dish Burning sample Steel bomb heat capacity of calorimeter = J/°C Combustion (bomb) calorimeter.
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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Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Transcribed Image Text:Ignition
wires
heat
Thermometer
Stirrer
A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat
of combustion of fuels and the energy content of foods.
sample
Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat
capacity of the calorimeter. This is known as calibrating the calorimeter.
Water
In the laboratory a student burns a 0.429-g sample of biphenyl (C12H10) in a bomb calorimeter
containing 1170. g of water. The temperature increases from 26.00 °C to 29.00 °C. The heat
capacity of water is 4.184 J g1l°c-1.
The molar heat of combustion is -6251 kJ per mole of biphenyl.
C12H10(s) + 29/2 O2(g) →12 CO2(g) + 5 H2O(1) + Energy
Calculate the heat capacity of the calorimeter.
Insulated
outside
chamber
Sample
dish
Burning
sample
Steel
bomb
heat capacity of calorimeter
J/°C
Combustion (bomb) calorimeter.
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