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Calculating an Enthalpy of Reaction from Enthalpies of

Chemistry: The Central Science | 12th Edition | ISBN: 9780321696724 | Authors: Theodore E. Brown; H. Eugene LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward ISBN: 9780321696724 27

Solution for problem 11PE Chapter 5

Chemistry: The Central Science | 12th Edition

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Chemistry: The Central Science | 12th Edition | ISBN: 9780321696724 | Authors: Theodore E. Brown; H. Eugene LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward

Chemistry: The Central Science | 12th Edition

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Problem 11PE

Use Table 5.3 to calculate the enthalpy change for the combustion of \(1 \ mol\) of ethanol:

\(\mathrm{C}_2\mathrm{H}_5\mathrm{OH}(l)+3\mathrm{\ O}_2(g)\longrightarrow2\mathrm{\ CO}_2(g)+3\mathrm{\ H}_2\mathrm{O}(l)\)

Equation Transcription:

Text Transcription:

1 mol

C_2 H_5 OH(l) + 3 O_2 (g) rightarrow 2 CO_2 (g) + 3 H_2 O(l)

Step-by-Step Solution:
Step 1 of 3

Chapter 12 Lecture Notes  Things to remember o Remember that properties of gases can be related by PV=nRT (ideal gas law) o Remember that molecules of gases are far apart, while molecules in liquid and solid are closely packed o Remember that molecules can have polar bonds, due to differences in electronegativity of bonded atoms o Intramolecular bonds are strong  Covalent: 100-400 kJ/mol  Ionic: 700 -1100 kJ/mol o Intramolecular forces: forces holding atoms together to form molecules (covalent bonds, ionic bonds) o Intermolecular forces: electrostatic interactions between molecules that are weaker than forces between oppositely charged ions  Intermolecular forces o Directly related to melting point, boiling point, and energy needed for phase changes (convert solid to liquid or liquid to vapor) o Important in determining solubility of gases, liquids, and solids in various solvents o Crucial in determining structures of biologically important molecules  Ion-ion forces, for comparison of magnitude o Na+ - Cl- in salt  The strongest forces  Lead to solids with high melting temperatures  NaCl = 800 degrees C  Types of intermolecular forces o Ion-dipole o Dipole-dipole o Dipole-induced dipole o Induced dipole-induced dipole  Attraction between ions and

Step 2 of 3

Chapter 5, Problem 11PE is Solved
Step 3 of 3

Textbook: Chemistry: The Central Science
Edition: 12
Author: Theodore E. Brown; H. Eugene LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward
ISBN: 9780321696724

This textbook survival guide was created for the textbook: Chemistry: The Central Science, edition: 12. Since the solution to 11PE from 5 chapter was answered, more than 446 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 11PE from chapter: 5 was answered by , our top Chemistry solution expert on 04/03/17, 07:58AM. This full solution covers the following key subjects: combustion, Enthalpy, standard, change, Benzene. This expansive textbook survival guide covers 49 chapters, and 5471 solutions. Chemistry: The Central Science was written by and is associated to the ISBN: 9780321696724. The answer to “?Use Table 5.3 to calculate the enthalpy change for the combustion of \(1 \ mol\) of ethanol:\(\mathrm{C}_2\mathrm{H}_5\mathrm{OH}(l)+3\mathrm{\ O}_2(g)\longrightarrow2\mathrm{\ CO}_2(g)+3\mathrm{\ H}_2\mathrm{O}(l)\)Equation Transcription:Text Transcription:1 molC_2 H_5 OH(l) + 3 O_2 (g) rightarrow 2 CO_2 (g) + 3 H_2 O(l)” is broken down into a number of easy to follow steps, and 37 words.

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