4. Apply Hess's Law to determine the heat of combustion (AHxn) of methanol which is a fuel you used in this week's lab. To answer this question, you must write out formation equations for all reactants and products and show how these equations can be combined to yield the target combustion reaction equation given on the next page as Data (B). BRIEF ANSWER: -726.5 kJ. Data: A. The AH°; values for the reactants and products are: i. AH° [CH3OH(/)] = -238.6 kJ/mol ii. AH° [02(g)] = 0 kJ/mol iii. AH°: [CO2(g)] =-393.5 kJ/mol AH°r [H2O(/)] =-285.8 kJ/mol %3D iv. %3D %3D B. Target Equation: CH3OH(/) + 1.5 O2(g) → CO2(g) + 2 H20(/) AHxn= ???
4. Apply Hess's Law to determine the heat of combustion (AHxn) of methanol which is a fuel you used in this week's lab. To answer this question, you must write out formation equations for all reactants and products and show how these equations can be combined to yield the target combustion reaction equation given on the next page as Data (B). BRIEF ANSWER: -726.5 kJ. Data: A. The AH°; values for the reactants and products are: i. AH° [CH3OH(/)] = -238.6 kJ/mol ii. AH° [02(g)] = 0 kJ/mol iii. AH°: [CO2(g)] =-393.5 kJ/mol AH°r [H2O(/)] =-285.8 kJ/mol %3D iv. %3D %3D B. Target Equation: CH3OH(/) + 1.5 O2(g) → CO2(g) + 2 H20(/) AHxn= ???
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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![4. Apply Hess's Law to determine the heat of combustion (AHxn) of methanol which is a fuel you used in this
week's lab. To answer this question, you must write out formation equations for all reactants and
products and show how these equations can be combined to yield the target combustion reaction
equation given on the next page as Data (B). BRIEF ANSWER: -726.5 kJ.
Data:
A. The AH°; values for the reactants and products are:
i. AH° [CH3OH(/)] = -238.6 kJ/mol
ii. AH° [02(g)] = 0 kJ/mol
iii. AH°: [CO2(g)] =-393.5 kJ/mol
AH°r [H2O(/)] =-285.8 kJ/mol
%3D
iv.
%3D
%3D
B. Target Equation: CH3OH(/) + 1.5 O2(g) → CO2(g) + 2 H20(/) AHxn= ???](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbc5d67c7-de05-46d7-897f-8addecb861aa%2F2a85279f-b1a5-41e0-a6e6-afebc94f4ac4%2F4kgboxu.jpeg&w=3840&q=75)
Transcribed Image Text:4. Apply Hess's Law to determine the heat of combustion (AHxn) of methanol which is a fuel you used in this
week's lab. To answer this question, you must write out formation equations for all reactants and
products and show how these equations can be combined to yield the target combustion reaction
equation given on the next page as Data (B). BRIEF ANSWER: -726.5 kJ.
Data:
A. The AH°; values for the reactants and products are:
i. AH° [CH3OH(/)] = -238.6 kJ/mol
ii. AH° [02(g)] = 0 kJ/mol
iii. AH°: [CO2(g)] =-393.5 kJ/mol
AH°r [H2O(/)] =-285.8 kJ/mol
%3D
iv.
%3D
%3D
B. Target Equation: CH3OH(/) + 1.5 O2(g) → CO2(g) + 2 H20(/) AHxn= ???
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