Octane, C3H18 , is a constituent of gasoline, and burns in the presence of oxygen to produce water and carbon dioxide: 25 O2(g) 18 H2O(1) 2 C3H18 (1) + C3H18 (1) → 16 CO2(g) + ΔΗΟ kJ/2mol %D rxn When a 1.00-gram sample of octane is burned in a bomb calorimeter the temperature of the water and the calorimeter rises from 25.00°C to 33.20°C. If the heat capacity, Cpomb cal, of the empty bomb calorimeter is 837 J/°C, and the mass of the water is 1.200 kg: a) Calculate the heat, q, transferred, during the combustion, to the calorimeter: [ Select ] kJ (calorimter) + qbomb cal Cbomb cal • AT b) Calculate the heat, q, transferred, during the combustion, to the water: [ Select ] kJ (1.200 kg H20) + 9H2O = • AT • SH2O + MH20 c) Calculate the enthalpy change (AHº rxn = kJ/2mol) for this reaction (2 mol of C3H18 (1): [ Select ] kJ/2 mol C3H18 (1)

Octane, C3H18 , is a constituent of gasoline, and burns in the presence of oxygen to produce water and carbon dioxide: 25 O2(g) 18 H2O(1) 2 C3H18 (1) + C3H18 (1) → 16 CO2(g) + ΔΗΟ kJ/2mol %D rxn When a 1.00-gram sample of octane is burned in a bomb calorimeter the temperature of the water and the calorimeter rises from 25.00°C to 33.20°C. If the heat capacity, Cpomb cal, of the empty bomb calorimeter is 837 J/°C, and the mass of the water is 1.200 kg: a) Calculate the heat, q, transferred, during the combustion, to the calorimeter: [ Select ] kJ (calorimter) + qbomb cal Cbomb cal • AT b) Calculate the heat, q, transferred, during the combustion, to the water: [ Select ] kJ (1.200 kg H20) + 9H2O = • AT • SH2O + MH20 c) Calculate the enthalpy change (AHº rxn = kJ/2mol) for this reaction (2 mol of C3H18 (1): [ Select ] kJ/2 mol C3H18 (1)

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter8: Thermochemistry

Section: Chapter Questions

Problem 13QAP: Fructose is a sugar commonly found in fruit. A sample of fructose, C6H12O6, weighing 4.50 g is...

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