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. ignitia Thememater heat ample In an experiment, a 0.5487 g sample of xanthone (C13HeO2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.050x10° g of water. During the combustion the temperature increases from 28.31 to 31.38 °C. The heat capacity of water is 4.184 J g1°C1. The heat capacity of the calorimeter was determined in a previous experiment to be 917.9 J/C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of xanthone based on these data. Sande Bumg sangle Steal ban uide thander C43HgO2(s) + 1402(9) 4 H,O() + 13 CO,(g) + Energy Combention (ho carte. Molar Heat of Combustion = kJ/mol
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. ignitia Thememater heat ample In an experiment, a 0.5487 g sample of xanthone (C13HeO2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.050x10° g of water. During the combustion the temperature increases from 28.31 to 31.38 °C. The heat capacity of water is 4.184 J g1°C1. The heat capacity of the calorimeter was determined in a previous experiment to be 917.9 J/C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of xanthone based on these data. Sande Bumg sangle Steal ban uide thander C43HgO2(s) + 1402(9) 4 H,O() + 13 CO,(g) + Energy Combention (ho carte. Molar Heat of Combustion = kJ/mol
Chemistry: Principles and Reactions
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Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
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Problem 88QAP: A sample of sucrose, C12H22O11, is contaminated by sodium chloride. When the contaminated sample is...
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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: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.
In an experiment, a 0.5487 g sample of xanthone (C13H3O2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by
1.050x10° g of water. During the combustion the temperature increases from 28.31 to 31.38 °C. The heat capacity of water is 4.184 Jgl°c1.
sample
The heat capacity of the calorimeter was determined in a previous experiment to be 917.9 J/°C.
Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of xanthone based on these data.
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thanber
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C13H3O2(s) + 1402(g) 4 H20() + 13
+ Energy
Combotion (bomh) caloricter.
Molar Heat of Combustion =
kJ/mol
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