Chemistry
13th Edition
ISBN: 9781260162370
Author: Chang
Publisher: MCG
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Chapter 23, Problem 23.25QP
Draw structures of all the geometric and optical isomers of each of the following cobalt complexes:
- (a) [Co(NH3)6]3+
- (b) [Co(NH3)5Cl]2+
- (c) [Co(C2O4)3]3−
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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
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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.
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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 23 Solutions
Chemistry
Ch. 23.1 - Identify the following transition metal atoms and...Ch. 23.3 - Write the oxidation numbers of the metals in the...Ch. 23.3 - Prob. 2PECh. 23.3 - Prob. 3PECh. 23.3 - Prob. 1RCFCh. 23.3 - What is the difference between these two...Ch. 23.3 - Prob. 3RCFCh. 23.4 - Prob. 1RCFCh. 23.5 - Prob. 4PECh. 23.5 - Prob. 1RCF
Ch. 23.5 - Determine the number of unpaired electrons in the...Ch. 23 - What distinguishes a transition metal from a...Ch. 23 - Why is zinc not considered a transition metal?Ch. 23 - Explain why atomic radii decrease very gradually...Ch. 23 - Without referring to the text, write the...Ch. 23 - Write the electron configurations of the following...Ch. 23 - Why do transition metals have more oxidation...Ch. 23 - Prob. 23.7QPCh. 23 - Prob. 23.8QPCh. 23 - Define the following terms: coordination compound,...Ch. 23 - Describe the interaction between a donor atom and...Ch. 23 - Prob. 23.11QPCh. 23 - Prob. 23.12QPCh. 23 - Prob. 23.13QPCh. 23 - Prob. 23.14QPCh. 23 - Prob. 23.15QPCh. 23 - What are the systematic names for the following...Ch. 23 - Prob. 23.17QPCh. 23 - Prob. 23.18QPCh. 23 - Define the following terms: stereoisomers,...Ch. 23 - Prob. 23.20QPCh. 23 - Prob. 23.21QPCh. 23 - Prob. 23.22QPCh. 23 - Prob. 23.23QPCh. 23 - Prob. 23.24QPCh. 23 - Draw structures of all the geometric and optical...Ch. 23 - Prob. 23.26QPCh. 23 - Briefly describe crystal field theory.Ch. 23 - Prob. 23.28QPCh. 23 - What is the origin of color in a coordination...Ch. 23 - Prob. 23.30QPCh. 23 - Prob. 23.31QPCh. 23 - Prob. 23.32QPCh. 23 - Prob. 23.33QPCh. 23 - Prob. 23.34QPCh. 23 - Prob. 23.35QPCh. 23 - The absorption maximum for the complex ion...Ch. 23 - Prob. 23.37QPCh. 23 - A solution made by dissolving 0.875 g of...Ch. 23 - Prob. 23.39QPCh. 23 - Prob. 23.40QPCh. 23 - Prob. 23.41QPCh. 23 - The [Fe(CN)6]3 complex is more labile than the...Ch. 23 - Aqueous copper(II) sulfate solution is blue in...Ch. 23 - When aqueous potassium cyanide is added to a...Ch. 23 - A concentrated aqueous copper(II) chloride...Ch. 23 - Prob. 23.46QPCh. 23 - As we read across the first-row transition metals...Ch. 23 - Prob. 23.48QPCh. 23 - Prob. 23.49QPCh. 23 - Prob. 23.50QPCh. 23 - Prob. 23.51QPCh. 23 - Chemical analysis shows that hemoglobin contains...Ch. 23 - Explain the following facts: (a) Copper and iron...Ch. 23 - A student in 1895 prepared three coordination...Ch. 23 - Prob. 23.55QPCh. 23 - From the standard reduction potentials listed in...Ch. 23 - Using the standard reduction potentials listed in...Ch. 23 - The Co2+-porphyrin complex is more stable than the...Ch. 23 - Prob. 23.59QPCh. 23 - Prob. 23.60QPCh. 23 - Hydrated Mn2+ ions are practically colorless (see...Ch. 23 - Which of the following hydrated cations are...Ch. 23 - Prob. 23.63QPCh. 23 - Prob. 23.64QPCh. 23 - Prob. 23.65QPCh. 23 - Prob. 23.66QPCh. 23 - The compound 1,1,1-trifluoroacetylacetone (tfa) is...Ch. 23 - Prob. 23.68QPCh. 23 - Prob. 23.69QPCh. 23 - Prob. 23.70QPCh. 23 - Prob. 23.71QPCh. 23 - Commercial silver-plating operations frequently...Ch. 23 - Draw qualitative diagrams for the crystal field...Ch. 23 - (a) The free Cu(I) ion is unstable in solution and...Ch. 23 - Prob. 23.75QPCh. 23 - Prob. 23.76QP
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