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

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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