Stirrer 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. heat sample In an experiment, a 0.4612 g sample of xanthone (C13H3O2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.232×10° g of water. During the combustion the temperature increases from 25.76 to 28.05 °C. The heat capacity of water is 4.184 J g-l°c!. Water The heat capacity of the calorimeter was determined in a previous experiment to be 765.3 J/°C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of xanthone based on these data. C13H3O2(s) + 140,(g) →4 H20(1) + 13 CO,(g) + Energy Insulated Sample dish Burning sample Steel bomb outside chamber Molar Heat of Combustion = kJ/mol Combustion (bomb) calorimeter.
Stirrer 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. heat sample In an experiment, a 0.4612 g sample of xanthone (C13H3O2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.232×10° g of water. During the combustion the temperature increases from 25.76 to 28.05 °C. The heat capacity of water is 4.184 J g-l°c!. Water The heat capacity of the calorimeter was determined in a previous experiment to be 765.3 J/°C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of xanthone based on these data. C13H3O2(s) + 140,(g) →4 H20(1) + 13 CO,(g) + Energy Insulated Sample dish Burning sample Steel bomb outside chamber Molar Heat of Combustion = kJ/mol 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
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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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.
Question
Transcribed Image Text:Stirrer
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.
heat
sample
In an experiment, a 0.4612 g sample of xanthone (C13H3O2) is burned completely in a
bomb calorimeter. The calorimeter is surrounded by 1.232×10° g of water. During the
combustion the temperature increases from 25.76 to 28.05 °C. The heat capacity of
water is 4.184 J g-l°c!.
Water
The heat capacity of the calorimeter was determined in a previous experiment to be
765.3 J/°C.
Assuming that no energy is lost to the surroundings, calculate the molar heat of
combustion of xanthone based on these data.
C13H3O2(s) + 140,(g) →4 H20(1) + 13 CO,(g) + Energy
Insulated
Sample
dish
Burning
sample
Steel
bomb
outside
chamber
Molar Heat of Combustion =
kJ/mol
Combustion (bomb) calorimeter.
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