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1) For each compound, complete the following steps: a) Write a complete, balanced combustion equation using Lewis structures for all species. An example for methane is shown below. b) Make a list of all the bonds that are broken and formed during the reaction (see also example below). c) Calculate AH in kJ/mol using the equation above. d) Calculate the AH in kJ/g. Ex. Balanced Combustion Equation for Methane (CH4) H H-C-H I H +20=0 Bond Broken (energy absorbed) 4 C-H bonds 2 0-0 bonds 0=c=0 + 2 H-0-H Bonds Formed (energy released) 2 C=O bonds 4 0-H bonds

1) For each compound, complete the following steps: a) Write a complete, balanced combustion equation using Lewis structures for all species. An example for methane is shown below. b) Make a list of all the bonds that are broken and formed during the reaction (see also example below). c) Calculate AH in kJ/mol using the equation above. d) Calculate the AH in kJ/g. Ex. Balanced Combustion Equation for Methane (CH4) H H-C-H I H +20=0 Bond Broken (energy absorbed) 4 C-H bonds 2 0-0 bonds 0=c=0 + 2 H-0-H Bonds Formed (energy released) 2 C=O bonds 4 0-H bonds

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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Do propane (CH8) 

question 1) C and D

Knowing this, the change in enthalpy (AH) for a reaction- the amount of heat energy absorbed or released- can be estimated using the following equation and the BDE's of various chemical bonds: Bond H-H H-C H-O H-F H-CI H-Br Br-Br AH (BDE's of bonds breaking) - (BDE's of bonds being formed) BDE (kJ/mol) 432 411 459 565 428 362 190 Literature Combustion Data: Methane Data Page ● Ethane Data Page Propane Data Page Ethanol Data Page Bond C-C C=C CEC C-O C=O H-1 |- BDE (kJ/mol) 346 602 835 358 799 295 148 Bond N-N N=N NEN O-O 0=0 F-F CI-CI BDE (kJ/mol) 167 418 942 142 494 155 240 For this demonstration to the CEO, we're going to calculate the change in enthalpy, AH, for the combustion of 4 compounds: methane (CH4), ethane (C₂H6), propane (C3H8), and ethanol (C₂H5OH).
Transcribed Image Text:Knowing this, the change in enthalpy (AH) for a reaction- the amount of heat energy absorbed or released- can be estimated using the following equation and the BDE's of various chemical bonds: Bond H-H H-C H-O H-F H-CI H-Br Br-Br AH (BDE's of bonds breaking) - (BDE's of bonds being formed) BDE (kJ/mol) 432 411 459 565 428 362 190 Literature Combustion Data: Methane Data Page ● Ethane Data Page Propane Data Page Ethanol Data Page Bond C-C C=C CEC C-O C=O H-1 |- BDE (kJ/mol) 346 602 835 358 799 295 148 Bond N-N N=N NEN O-O 0=0 F-F CI-CI BDE (kJ/mol) 167 418 942 142 494 155 240 For this demonstration to the CEO, we're going to calculate the change in enthalpy, AH, for the combustion of 4 compounds: methane (CH4), ethane (C₂H6), propane (C3H8), and ethanol (C₂H5OH).
1) For each compound, complete the following steps: a) Write a complete, balanced combustion equation using Lewis structures for all species. An example for methane is shown below. b) Make a list of all the bonds that are broken and formed during the reaction (see also example below). c) Calculate AH in kJ/mol using the equation above. d) Calculate the AH in kJ/g. Ex. Balanced Combustion Equation for Methane (CH4) H H-C-H + 20=0 H Bond Broken (energy absorbed) 4 C-H bonds 2 0=0 bonds 0=c=0 + 2 H-O-H Bonds Formed (energy released) 2 C=0 bonds 4 O-H bonds
Transcribed Image Text:1) For each compound, complete the following steps: a) Write a complete, balanced combustion equation using Lewis structures for all species. An example for methane is shown below. b) Make a list of all the bonds that are broken and formed during the reaction (see also example below). c) Calculate AH in kJ/mol using the equation above. d) Calculate the AH in kJ/g. Ex. Balanced Combustion Equation for Methane (CH4) H H-C-H + 20=0 H Bond Broken (energy absorbed) 4 C-H bonds 2 0=0 bonds 0=c=0 + 2 H-O-H Bonds Formed (energy released) 2 C=0 bonds 4 O-H bonds
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