Chemistry (OER)
2nd Edition
ISBN: 9781947172616
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 13, Problem 64E
Why are there no changes specified for NH4HS in Exercise 13.62, part (e)? What property of NH4HS does change?
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Students have asked these similar questions
(28 pts.) 7. Propose a synthesis for each of the following transformations. You must include the
reagents and product(s) for each step to receive full credit. The number of steps is provided.
(OC 4)
4 steps
4 steps
OH
b.
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.
Chapter 13 Solutions
Chemistry (OER)
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Write the expression of the reaction quotient for...Ch. 13 - Write the reaction quotient expression for the...Ch. 13 - What is the approximate value of the equilibrium...Ch. 13 - The following equation represents a reversible...Ch. 13 - Explain how to recognize the conditions under...Ch. 13 - What property of a reaction can we use to predict...Ch. 13 - What would happen to the color of the solution in...Ch. 13 - The following reaction occurs when a burner on a...Ch. 13 - A necessary step in the manufacture of sulfuric...Ch. 13 - Suggest four ways in which the concentration of...Ch. 13 - Suggest four ways in which the concentration of...Ch. 13 - How will an increase in temperature affect each of...Ch. 13 - How will an increase in temperature affect each of...Ch. 13 - Water gas is a 1:1 mixture of carbon monoxide and...Ch. 13 - Nitrogen and oxygen react at high temperatures....Ch. 13 - Water gas, a mixture of H2 and CO, is an important...Ch. 13 - Pure iron metal can be produced by the reduction...Ch. 13 - 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Why are there no changes specified for Ni in...Ch. 13 - Why are there no changes specified for NH4HS in...Ch. 13 - Analysis of the gases in a sealed reaction vessel...Ch. 13 - Calculate the number of moles of HI that are at...Ch. 13 - What is the pressure of BrCl in an equilibrium...Ch. 13 - What is the pressure of CO2 in a mixture at...Ch. 13 - Cobalt metal can be prepared by reducing cobalt...Ch. 13 - Carbon reacts with water vapor at elevated...Ch. 13 - Sodium sulfate 10-hydrate, Na2SO410H2O, dehydrates...Ch. 13 - Calcium Chloride 6-hydrate, CaCl26H2O, dehydrates...Ch. 13 - A student solved the following problem and found...Ch. 13 - A student solved the following problem and found...Ch. 13 - Assume that the change in concentration of N2O4 is...Ch. 13 - Assume that the change in concentration of COCI2...Ch. 13 - Assume that the change in pressure of H2S is small...Ch. 13 - What are all concentrations after a mixture that...Ch. 13 - What are the concentrations of PCl5, PCl3, and Cl2...Ch. 13 - Calculate the pressures of all species at...Ch. 13 - Calculate the equilibrium concentrations of NO,...Ch. 13 - Calculate the equilibrium concentrations that...Ch. 13 - One of the important reactions in the formation of...Ch. 13 - Calculate the pressures of NO, Cl2, and NOCI in an...Ch. 13 - Calculate the number of grams of HI that are at...Ch. 13 - Butane exists as two isomers, n -butane and...Ch. 13 - What is the minimum mass of CaCO3 required to...Ch. 13 - The equilibrium constant (Kc) for this reaction is...Ch. 13 - At 25 C and at 1 atm, the partial pressures in an...Ch. 13 - In a 3.0-L vessel, the following equilibrium...Ch. 13 - The equilibrium constant (Kc) for this reaction is...Ch. 13 - Antimony pentachloride decomposes according to...Ch. 13 - Consider the reaction between H2 and O2 at 1000...Ch. 13 - An equilibrium is established according to the...Ch. 13 - Consider the equilibrium...Ch. 13 - The binding of oxygen by hemoglobin (Hb), giving...Ch. 13 - The hydrolysis of the sugar sucrose to the sugars...Ch. 13 - The density of trifluoroacetic acid vapor was...Ch. 13 - Liquid N2o3 is dark blue at low temperatures, but...Ch. 13 - A 1.00-L vessel at 400 C contains the following...Ch. 13 - A 0.010 M solution of the weak acid HA has an...
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