Chemistry
13th Edition
ISBN: 9781260162370
Author: Chang
Publisher: MCG
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Textbook Question
Chapter 22, Problem 22.94QP
What is the change in oxidation number for the following reaction?
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LTS
Solid:
AT=Te-Ti
Trial 1
Trial 2
Trial 3
Average
ΔΗ
Mass water, g
24.096
23.976
23.975
Moles of solid, mol
0.01763
001767
0101781
Temp. change, °C
2.9°C
11700
2.0°C
Heat of reaction, J
-292.37J -170.473
-193.26J
AH, kJ/mole
16.58K 9.647 kJ 10.85 kr
16.58K59.64701
KJ
mol
12.35k
Minimum AS,
J/mol K
41.582
mol-k
Remember: q = mCsAT (m = mass of water, Cs=4.184J/g°C) & qsin =-qrxn &
Show your calculations for:
AH in J and then in kJ/mole for Trial 1:
qa (24.0969)(4.1845/g) (-2.9°C)=-292.37J
qsin =
qrxn =
292.35 292.37J
AH in J = 292.375 0.2923kJ
0.01763m01
=1.65×107
AH in kJ/mol =
=
16.58K
0.01763mol
mol
qrx
Minimum AS in J/mol K (Hint: use the average initial temperature of the three trials, con
Kelvin.)
AS=AHIT
(1.65×10(9.64×103) + (1.0
Jimai
For the compound: C8H17NO2
Use the following information to come up with a plausible structure:
8
This compound has "carboxylic acid amide" and ether functional groups.
The peaks at 1.2ppm are two signals that are overlapping one another.
One of the two signals is a doublet that represents 6 hydrogens; the
other signal is a quartet that represents 3 hydrogens.
Vnk the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest bolling
point, choose 2 next to the substance with the next highest boiling point, and so on.
substance
C
D
chemical symbol,
chemical formula
or Lewis structure.
CH,-N-CH,
CH,
H
H 10: H
C-C-H
H H H
Cale
H 10:
H-C-C-N-CH,
Bri
CH,
boiling point
(C)
Сен
(C) B
(Choose
Chapter 22 Solutions
Chemistry
Ch. 22 - Prob. 22.1QPCh. 22 - Prob. 22.2QPCh. 22 - Prob. 22.3QPCh. 22 - Carbon is usually classified as a nonmetal....Ch. 22 - Prob. 22.5QPCh. 22 - Describe two laboratory and two industrial...Ch. 22 - Prob. 22.7QPCh. 22 - Prob. 22.8QPCh. 22 - Prob. 22.9QPCh. 22 - Describe what is meant by the hydrogen economy.
Ch. 22 - Elements number 17 and 20 form compounds with...Ch. 22 - Give an example of hydrogen as (a) an oxidizing...Ch. 22 - Prob. 22.13QPCh. 22 - Prob. 22.14QPCh. 22 - Prob. 22.15QPCh. 22 - Prob. 22.16QPCh. 22 - Prob. 22.17QPCh. 22 - Starting with H2, describe how you would prepare...Ch. 22 - Give an example of a carbide and a cyanide.Ch. 22 - How are cyanide ions used in metallurgy?Ch. 22 - Briefly discuss the preparation and properties of...Ch. 22 - Prob. 22.22QPCh. 22 - Prob. 22.23QPCh. 22 - Describe two chemical differences between CO and...Ch. 22 - Describe the reaction between CO2 and OH in terms...Ch. 22 - Prob. 22.26QPCh. 22 - Prob. 22.27QPCh. 22 - Prob. 22.28QPCh. 22 - Prob. 22.29QPCh. 22 - Magnesium chloride is dissolved in a solution...Ch. 22 - Prob. 22.31QPCh. 22 - Prob. 22.32QPCh. 22 - A piece of red-hot magnesium ribbon will continue...Ch. 22 - Prob. 22.34QPCh. 22 - Describe a laboratory and an industrial...Ch. 22 - Prob. 22.36QPCh. 22 - Prob. 22.37QPCh. 22 - Prob. 22.38QPCh. 22 - Prob. 22.39QPCh. 22 - Prob. 22.40QPCh. 22 - Prob. 22.41QPCh. 22 - Write a balanced equation for the formation of...Ch. 22 - Prob. 22.43QPCh. 22 - At 620 K the vapor density of ammonium chloride...Ch. 22 - Prob. 22.45QPCh. 22 - Prob. 22.46QPCh. 22 - Write a balanced equation for each of the...Ch. 22 - Prob. 22.48QPCh. 22 - Prob. 22.49QPCh. 22 - Predict the geometry of nitrous oxide, N2O, by the...Ch. 22 - Consider the reaction N2(g)+O2(g)2NO(g) Given that...Ch. 22 - From the data in Appendix 2, calculate H for the...Ch. 22 - Prob. 22.53QPCh. 22 - Prob. 22.54QPCh. 22 - Prob. 22.55QPCh. 22 - Prob. 22.56QPCh. 22 - Prob. 22.57QPCh. 22 - Prob. 22.58QPCh. 22 - Describe one industrial and one laboratory...Ch. 22 - Prob. 22.60QPCh. 22 - Prob. 22.61QPCh. 22 - Prob. 22.62QPCh. 22 - Describe the contact process for the production of...Ch. 22 - Prob. 22.64QPCh. 22 - Prob. 22.65QPCh. 22 - One of the steps involved in the depletion of...Ch. 22 - Hydrogen peroxide is unstable and decomposes...Ch. 22 - What are the oxidation numbers of O and F in HFO?Ch. 22 - Prob. 22.69QPCh. 22 - In 2008, about 48 million tons of sulfuric acid...Ch. 22 - Prob. 22.71QPCh. 22 - Prob. 22.72QPCh. 22 - Prob. 22.73QPCh. 22 - Prob. 22.74QPCh. 22 - Prob. 22.75QPCh. 22 - Prob. 22.76QPCh. 22 - Describe two reactions in which sulfuric acid acts...Ch. 22 - Prob. 22.78QPCh. 22 - Prob. 22.79QPCh. 22 - Prob. 22.80QPCh. 22 - Prob. 22.81QPCh. 22 - Prob. 22.82QPCh. 22 - Prob. 22.83QPCh. 22 - Prob. 22.84QPCh. 22 - Prob. 22.85QPCh. 22 - Hydrogen fluoride can be prepared by the action of...Ch. 22 - Prob. 22.87QPCh. 22 - Prob. 22.88QPCh. 22 - Use the VSEPR method to predict the geometries of...Ch. 22 - Iodine pentoxide, I2O5, is sometimes used to...Ch. 22 - Prob. 22.91QPCh. 22 - Prob. 22.92QPCh. 22 - Prob. 22.93QPCh. 22 - What is the change in oxidation number for the...Ch. 22 - Prob. 22.95QPCh. 22 - Prob. 22.96QPCh. 22 - Prob. 22.97QPCh. 22 - Consider the Frasch process. (a) How is it...Ch. 22 - Predict the physical and chemical properties of...Ch. 22 - Prob. 22.100QPCh. 22 - Prob. 22.101QPCh. 22 - Life evolves to adapt to its environment. In this...Ch. 22 - Prob. 22.103QPCh. 22 - As we saw in Section 21.2, the reduction of iron...Ch. 22 - Assuming ideal behavior, calculate the density of...Ch. 22 - A 10.0-g sample of white phosphorus was burned in...
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