The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In a particular bomb calorimeter (initially at room temperature), the combustion of 0.1080 g of salicylic acid, in the presence of excess oxygen, causes the temperature of the calorimeter to rise by 1.60 °C. When a 0.2972-g sample of an unknown organic substance is similarly burned in the same calorimeter, the temperature rises by 4.80 °C. What is the energy of combustion per unit mass of the unknown substance?
The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In a particular bomb calorimeter (initially at room temperature), the combustion of 0.1080 g of salicylic acid, in the presence of excess oxygen, causes the temperature of the calorimeter to rise by 1.60 °C. When a 0.2972-g sample of an unknown organic substance is similarly burned in the same calorimeter, the temperature rises by 4.80 °C. What is the energy of combustion per unit mass of the unknown substance?
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 31E: When a 0.740-g sample of trinitrotoluene (TNT), C7H5N2O6, is burned in a bomb calorimeter, the...
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The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In a particular bomb calorimeter (initially at room temperature), the combustion of 0.1080 g of salicylic acid, in the presence of excess oxygen, causes the temperature of the calorimeter to rise by 1.60 °C. When a 0.2972-g sample of an unknown organic substance is similarly burned in the same calorimeter, the temperature rises by 4.80 °C. What is the energy of combustion per unit mass of the unknown substance?
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