In an experiment, a 0.6451 g sample of benzoic acid ( C7H6O2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.397 x 10³ g of water. During the combustion the temperature increases from 24.07 to 26.49 °C. The heat capacity of water is 4.184 J-g¹.C-¹. The heat capacity of the calorimeter was determined in a previous experiment to be 883.5 J. °C-¹. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of benzoic acid based on these data. C7H6O2 (s) + (15/2)02 (g) → 3H₂O(1) + 7CO2(g) + Energy kJ/mol Molar Heat of Combustion =

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Chapter1: Introduction
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Insulated Sample
outside dish
chamber
[Review Topics]
Burning Steel
sample bomb
Combustion (bomb) calorimeter.
[References]
In an experiment, a 0.6451 g sample of benzoic acid (
C7H6O2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by
1.397 x 10³ g of water. During the combustion the temperature increases from 24.07 to 26.49 °C.
The heat capacity of water is
4.184 J-g¹. C-¹.
Molar Heat of Combustion =
The heat capacity of the calorimeter was determined in a previous experiment to be
883.5 J. °C-¹.
Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of
benzoic acid based on these data.
C7H6O2 (s) + (15/2) O₂(g) → 3H₂O(1) + 7CO₂ (g) + Energy
kJ/mol
Transcribed Image Text:Insulated Sample outside dish chamber [Review Topics] Burning Steel sample bomb Combustion (bomb) calorimeter. [References] In an experiment, a 0.6451 g sample of benzoic acid ( C7H6O2) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.397 x 10³ g of water. During the combustion the temperature increases from 24.07 to 26.49 °C. The heat capacity of water is 4.184 J-g¹. C-¹. Molar Heat of Combustion = The heat capacity of the calorimeter was determined in a previous experiment to be 883.5 J. °C-¹. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of benzoic acid based on these data. C7H6O2 (s) + (15/2) O₂(g) → 3H₂O(1) + 7CO₂ (g) + Energy kJ/mol
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