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 0.7484 g sample of adipic acid (CH,1004) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.044x103 g of water. During the combustion the temperature increases from 28.71 to 31.53 °C. The heat capacity of water is 4.184 J gloc-1. The heat capacity of the calorimeter was determined in a previous experiment to be 917.5 J/°C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of adipic acid based on these data. C6H1004(s) + (13/2) 02(g) - → 5 H20(1) + 6 CO2(g) + Energy In Malas inat of Combustion = Visited kJ/mol cl
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 0.7484 g sample of adipic acid (CH,1004) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.044x103 g of water. During the combustion the temperature increases from 28.71 to 31.53 °C. The heat capacity of water is 4.184 J gloc-1. The heat capacity of the calorimeter was determined in a previous experiment to be 917.5 J/°C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of adipic acid based on these data. C6H1004(s) + (13/2) 02(g) - → 5 H20(1) + 6 CO2(g) + Energy In Malas inat of Combustion = Visited kJ/mol cl
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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.27QP: Hypothetical elements A2 and B2 react according to the following equation, forming the compound AB....
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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
sample
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.
In an experiment, a 0.7484 g sample of adipic acid (C,H,,04) is burned completely in a bomb calorimeter. The
calorimeter is surrounded by 1.044x10g of water. During the combustion the temperature increases from 28.71
Water
to 31.53 °C. The heat capacity of water is 4.184 J goC
The heat capacity of the calorimeter was determined in a previous experiment to be 917.5 J/°C.
Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of adipic acid based
on these data.
CH160S+(13/2) 03(g) = 5 H,0(1) + 6 CO,(g) + Energy
5 H,0(1) + 6 CO2(g) + Energy
Insulated
outside
chamber
Sample
dish
Burn
Ml Hat of Combustion =
Visited
kJ/mol
samp
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