CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
14th Edition
ISBN: 9780134863016
Author: Brown
Publisher: PEARSON
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Chapter 19, Problem 89AE
Interpretation Introduction
To determine: If the standard entropy change of the given reaction have large negative value or not.
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In the video, we looked at the absorbance of a certain substance and how it varies
depending on what wavelength of light we are looking at. Below is a similar scan of a
different substance. What color BEST describes how this substance will appear?
Absorbance (AU)
Violet
Blue
Green
Orange
1.2
1.0-
0.8-
0.6-
0.4-
0.2
0.0
450
500
550
600
650
700
Wavelength (nm)
violet
indigo
blue
green
yellow orange
red
Red
O Cannot tell from this information
In the above graph, what causes -450 nm wavelength of light to have a higher
absorbance than light with a -550 nm wavelength? Check all that are true.
The distance the light travels is different
The different data points are for different substances
The concentration is different at different times in the experiment
Epsilon (molar absortivity) is different at different wavelengths
5. a. Data were collected for Trial 1 to determine the molar mass of a nonvolatile solid solute when dissolved in cyclo-
hexane. Complete the table for the analysis (See Report Sheet). Record calculated values with the correct number
of significant figures.
B. Freezing Point of Cyclohexane plus
Calculation Zone
Unknown Solute
2. Mass of cyclohexane (g)
10.14
Part C.4
3. Mass of added solute (g)
0.255
C. Calculations
1. k; for cyclohexane (°C⚫ kg/mol)
20.0
2. Freezing point change, AT, (°C)
3.04
Part C.6
3. Mass of cyclohexane in solution (kg)
4. Moles of solute, total (mol)
Show calculation.
5. Mass of solute in solution, total (g)
6. Molar mass of solute (g/mol)
Show calculation.
Chapter 19 Solutions
CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
Ch. 19.1 - The process of iron being oxidized to make iron...Ch. 19.1 - At 1 atm pressure, CO2(s) sublimes at 78oC. Is...Ch. 19.2 - Prob. 19.2.1PECh. 19.2 - Prob. 19.2.2PECh. 19.3 - Prob. 19.3.1PECh. 19.3 - Prob. 19.3.2PECh. 19.3 - Prob. 19.4.1PECh. 19.3 - Prob. 19.4.2PECh. 19.4 - Prob. 19.5.1PECh. 19.4 - Using the standard molar entropies in Appendix C,...
Ch. 19.5 - Which of these statements is true? All spontaneous...Ch. 19.5 - Prob. 19.6.2PECh. 19.5 - Prob. 19.7.1PECh. 19.5 - Prob. 19.7.2PECh. 19.5 - Prob. 19.8.1PECh. 19.5 - Prob. 19.8.2PECh. 19.6 - What is the temperature above which the Haber...Ch. 19.6 - Prob. 19.9.2PECh. 19.7 - Prob. 19.10.1PECh. 19.7 - Prob. 19.10.2PECh. 19.7 - Prob. 19.11.1PECh. 19.7 - Prob. 19.11.2PECh. 19.7 - Prob. 19.12.1PECh. 19.7 - Prob. 19.12.2PECh. 19 - Prob. 1DECh. 19 - Prob. 1ECh. 19 - As shown here, one type of computer keyboard...Ch. 19 - 19.3
a. What are the signs of ΔS and ΔH for the...Ch. 19 - Predict the signs of H and S for this reaction....Ch. 19 - The accompanying diagram shows how entropy varies...Ch. 19 - Prob. 6ECh. 19 - The accompanying diagram shows how H (red line)...Ch. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - Prob. 10ECh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Can endothermic chemical reaction be spontaneous?...Ch. 19 - Prob. 15ECh. 19 - Prob. 16ECh. 19 - Prob. 17ECh. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - Prob. 22ECh. 19 - Prob. 23ECh. 19 - Prob. 24ECh. 19 - Prob. 25ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - Prob. 31ECh. 19 - Using the heat of vaporization in Appendix B,...Ch. 19 - Prob. 33ECh. 19 - Prob. 34ECh. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - Prob. 37ECh. 19 - Prob. 38ECh. 19 - For each of the following pairs, predict which...Ch. 19 - For each of the following pairs, predict which...Ch. 19 - Predict the sign of the entropy change of the...Ch. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - 19.44 Propanol (C3H7OH) melts at – 126.5 o C and...Ch. 19 - Prob. 45ECh. 19 - Prob. 46ECh. 19 - Prob. 47ECh. 19 - Prob. 48ECh. 19 - Prob. 49ECh. 19 - Prob. 50ECh. 19 - Using So values from Appendix C, calculate So...Ch. 19 - Calculate So values for the following reactions by...Ch. 19 - Prob. 53ECh. 19 - Prob. 54ECh. 19 - For a certain chemical reaction, Ho = -35.4 kJ and...Ch. 19 - A certain reaction has Ho = +23.7.kJ and So = +...Ch. 19 - Using data in Appendix C, calculate Ho, So, and Go...Ch. 19 - Prob. 58ECh. 19 - Prob. 59ECh. 19 - Prob. 60ECh. 19 - Prob. 61ECh. 19 - Prob. 62ECh. 19 - Prob. 63ECh. 19 - Prob. 64ECh. 19 - Prob. 65ECh. 19 - Prob. 66ECh. 19 - Prob. 67ECh. 19 - Prob. 68ECh. 19 - Prob. 69ECh. 19 - Prob. 70ECh. 19 - a. Use data in Appendix c to estimate the boiling...Ch. 19 - Prob. 72ECh. 19 - Prob. 73ECh. 19 - Prob. 74ECh. 19 - Prob. 75ECh. 19 - Prob. 76ECh. 19 - Prob. 77ECh. 19 - 19.78 Consider the reaction 3CH4(g) C3H8(g) ...Ch. 19 - Use data from Appendix C to calculate the...Ch. 19 - Prob. 80ECh. 19 - Prob. 81ECh. 19 - Prob. 82ECh. 19 - Prob. 83ECh. 19 - Prob. 84ECh. 19 - Prob. 85AECh. 19 - Prob. 86AECh. 19 - Prob. 87AECh. 19 - Prob. 88AECh. 19 - Prob. 89AECh. 19 - Prob. 90AECh. 19 - Prob. 91AECh. 19 - Prob. 92AECh. 19 - Prob. 93AECh. 19 - Prob. 94AECh. 19 - Prob. 95AECh. 19 - Prob. 96AECh. 19 - Prob. 97AECh. 19 - Prob. 98AECh. 19 - Prob. 99AECh. 19 - Prob. 100AECh. 19 - Prob. 101AECh. 19 - Prob. 102AECh. 19 - Most liquids follow Trouton’s rule (see Exercise...Ch. 19 - In chemical kinetics, the entropy of activation is...Ch. 19 - Prob. 105IECh. 19 - Prob. 106IECh. 19 - Prob. 107IECh. 19 - Prob. 108IECh. 19 - The following data compare the standard enthalpies...Ch. 19 - Prob. 110IECh. 19 - Prob. 111IECh. 19 - Prob. 112IE
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