Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781305176461
Author: Kotz
Publisher: Cengage
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Textbook Question
Chapter 11.2, Problem 1CYU
Which should have the more negative hydration energy, F‒ or Cl‒? Explain briefly.
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Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
2NH3 (g) = N2 (g) +3H₂
—N2 (g) AGº = 34. kJ
Now suppose a reaction vessel is filled with 4.19 atm of ammonia (NH3) and 9.94 atm of nitrogen (N2) at 378. °C. Answer the following questions about this
system:
rise
Under these conditions, will the pressure of NH 3 tend to rise or fall?
☐ x10
fall
Х
Is it possible to reverse this tendency by adding H₂?
In other words, if you said the pressure of NH 3 will tend to rise, can that
be changed to a tendency to fall by adding H₂? Similarly, if you said the
pressure of NH3 will tend to fall, can that be changed to a tendency to
rise by adding H₂?
If you said the tendency can be reversed in the second question, calculate
the minimum pressure of H₂ needed to reverse it.
Round your answer to 2 significant digits.
yes
no
atm
00.
18
Ar
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Identifying the major species in weak acid or weak base equilibria
The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at
equilibrium. You can leave out water itself.
Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the
formulas of the species that will act as neither acids nor bases in the 'other' row.
You will find it useful to keep in mind that HF is a weak acid.
2.2 mol of NaOH is added to
1.0 L of a 1.4M HF
solution.
acids:
П
bases:
Х
other: ☐
ப
acids:
0.51 mol of KOH is added to
1.0 L of a solution that is
bases:
1.3M in both HF and NaF.
other: ☐
00.
18
Ar
Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
N2O4 (g) 2NO2 (g)
AG⁰ = 5.4 kJ
Now suppose a reaction vessel is filled with 1.68 atm of dinitrogen tetroxide (N204) at 148. °C. Answer the following questions about this system:
rise
Under these conditions, will the pressure of N2O4 tend to rise or fall?
x10
fall
Is it possible to reverse this tendency by adding NO2?
In other words, if you said the pressure of N2O4 will tend to rise, can that
be changed to a tendency to fall by adding NO2? Similarly, if you said the
pressure of N2O4 will tend to fall, can that be changed to a tendency to
rise by adding NO2?
If you said the tendency can be reversed in the second question, calculate
the minimum pressure of NO 2 needed to reverse it.
Round your answer to 2 significant digits.
yes
no
0.42 atm
☑
5
0/5
?
مله
Ar
Chapter 11 Solutions
Chemistry & Chemical Reactivity
Ch. 11.2 - Which should have the more negative hydration...Ch. 11.2 - Prob. 1RCCh. 11.3 - Using structural formulas, describe the hydrogen...Ch. 11.3 - Prob. 1RCCh. 11.3 - Prob. 2RCCh. 11.4 - Prob. 1CYUCh. 11.4 - Prob. 1RCCh. 11.4 - Prob. 2RCCh. 11.5 - Prob. 1CYUCh. 11.5 - 1. What type of intermolecular forces is likely to...
Ch. 11.6 - The molar enthalpy of vaporization of methanol,...Ch. 11.6 - Prob. 2CYUCh. 11.6 - Prob. 1RCCh. 11.6 - Prob. 2RCCh. 11.6 - Prob. 3RCCh. 11.6 - Prob. 1QCh. 11.6 - Prob. 2QCh. 11.A - Prob. 1QCh. 11.A - Prob. 2QCh. 11 - Prob. 1PSCh. 11 - Intermolecular forces: What type of forces must be...Ch. 11 - Prob. 3PSCh. 11 - Prob. 4PSCh. 11 - Considering intermolecular forces in the pure...Ch. 11 - Considering intermolecular forces in the pure...Ch. 11 - Prob. 7PSCh. 11 - Which of the following compounds would be expected...Ch. 11 - Prob. 9PSCh. 11 - When salts of Mg2+, Na+, and Cs+ are placed in...Ch. 11 - Prob. 11PSCh. 11 - The enthalpy of vaporization of liquid mercury is...Ch. 11 - Answer the following questions using Figure 11.12:...Ch. 11 - Answer the following questions using Figure 11.12:...Ch. 11 - Prob. 15PSCh. 11 - Refer to Figure 11.12 to answer these questions:...Ch. 11 - Which member of each of the following pairs of...Ch. 11 - Place the following four compounds in order of...Ch. 11 - Prob. 19PSCh. 11 - You are comparing three different substances, A,...Ch. 11 - Equilibrium vapor pressures of benzene, C6H6, at...Ch. 11 - Prob. 22PSCh. 11 - Can carbon monoxide (Tc = 132.9 K; Pc = 34.5 atm...Ch. 11 - Methane (CH4) cannot be liquefied at room...Ch. 11 - What is surface tension? Give an example...Ch. 11 - What factors affect the viscosity of a substance?...Ch. 11 - If a piece of filter paper (an absorbent paper...Ch. 11 - When water is placed in a buret it forms a concave...Ch. 11 - Prob. 29GQCh. 11 - What types of intermolecular forces are important...Ch. 11 - Which of the following salts, Li2SO4 or Cs2SO4, is...Ch. 11 - Prob. 32GQCh. 11 - Prob. 33GQCh. 11 - Prob. 34GQCh. 11 - Rank the following compounds in order of...Ch. 11 - Prob. 36GQCh. 11 - Prob. 37GQCh. 11 - The following data are the equilibrium vapor...Ch. 11 - Prob. 39ILCh. 11 - A hand boiler can be purchased in toy stores or at...Ch. 11 - Prob. 41ILCh. 11 - Prob. 42ILCh. 11 - Acetone, CH3COCH3, is a common laboratory solvent....Ch. 11 - Cooking oil floats on top of water. From this...Ch. 11 - Liquid ethylene glycol, HOCH2CH2OH, is one of the...Ch. 11 - Liquid methanol, CH3OH, is placed in a glass tube....Ch. 11 - Account for these facts: (a) Although ethanol...Ch. 11 - Prob. 48SCQCh. 11 - Prob. 49SCQCh. 11 - Prob. 50SCQCh. 11 - Prob. 51SCQCh. 11 - Prob. 52SCQCh. 11 - A fluorocarbon, CF4, has a critical temperature of...Ch. 11 - Prob. 55SCQCh. 11 - List four properties of liquids that are directly...Ch. 11 - List the following ions in order of hydration...Ch. 11 - Prob. 59SCQCh. 11 - An 8.82-g sample of Br2 is placed in an evacuated...Ch. 11 - Polarizability is defined as the extent to which...Ch. 11 - Prob. 62SCQCh. 11 - A pressure cooker (a kitchen appliance) is a pot...Ch. 11 - Vapor pressures of NH3() at several temperatures...Ch. 11 - Prob. 65SCQCh. 11 - Prob. 66SCQCh. 11 - Prob. 67SCQ
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY