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Stearic acid (C18H3602) is a fatty acid, a molecule with a long hydrocarbon chain and an organic acid group (COOH) at the end. It is used to make cosmetics, ointments, soaps, and candles and is found in animal tissue as part of many saturated fats. In fact, when you eat meat, you are ingesting some fats containing stearic acid. Determine the AHXN for this combustion given the following information: AH of stearic acid = -948 kJ/mol, AH of CO2 = -394 kJ/mol, AHf of water = -242 kJ/mol. Calculate the heat (q) released in kJ when 261.8 g of stearic acid reacts with 903.9 g of oxygen. Enter a positive number to 0 decimal place.

Stearic acid (C18H3602) is a fatty acid, a molecule with a long hydrocarbon chain and an organic acid group (COOH) at the end. It is used to make cosmetics, ointments, soaps, and candles and is found in animal tissue as part of many saturated fats. In fact, when you eat meat, you are ingesting some fats containing stearic acid. Determine the AHXN for this combustion given the following information: AH of stearic acid = -948 kJ/mol, AH of CO2 = -394 kJ/mol, AHf of water = -242 kJ/mol. Calculate the heat (q) released in kJ when 261.8 g of stearic acid reacts with 903.9 g of oxygen. Enter a positive number to 0 decimal place.

Chemistry
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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Stearic acid (C18H3602) is a fatty acid, a molecule with a long hydrocarbon chain and an organic acid group (COOH) at the end. It is used to make cosmetics, ointments, soaps, and candles and is found in animal tissue as part of many saturated fats. In fact, when you eat meat, you are ingesting some fats containing stearic acid. Determine the AHrxn for this combustion given the following information: AH of stearic acid = -948 kJ/mol, AHf of CO, = -394 kJ/mol, AHf of water = -242 kJ/mol. Calculate the heat (q) released in kJ when 261.8 g of stearic acid reacts with 903.9 g of oxygen. Enter a positive number to 0 decimal place.
Transcribed Image Text:Stearic acid (C18H3602) is a fatty acid, a molecule with a long hydrocarbon chain and an organic acid group (COOH) at the end. It is used to make cosmetics, ointments, soaps, and candles and is found in animal tissue as part of many saturated fats. In fact, when you eat meat, you are ingesting some fats containing stearic acid. Determine the AHrxn for this combustion given the following information: AH of stearic acid = -948 kJ/mol, AHf of CO, = -394 kJ/mol, AHf of water = -242 kJ/mol. Calculate the heat (q) released in kJ when 261.8 g of stearic acid reacts with 903.9 g of oxygen. Enter a positive number to 0 decimal place.
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Combustion Reaction:

These are the reactions in which hydrocarbon reacts in the presence of oxygen and results in the formation of water and carbon dioxide.

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