Chemistry (7th Edition)
7th Edition
ISBN: 9780321943170
Author: John E. McMurry, Robert C. Fay, Jill Kirsten Robinson
Publisher: PEARSON
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Chapter 1, Problem 1.23CP
Which block in each of the following drawings of a balance is more dense, red or green? Explain.
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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
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Chapter 1 Solutions
Chemistry (7th Edition)
Ch. 1 - PRACTICE 1.1 Express the following quantities in...Ch. 1 - APPLY 1.2 Express the following quantities in...Ch. 1 - PRACTICE 1.3 The melting point of table salt is...Ch. 1 - Prob. 1.4ACh. 1 - PRACTICE 1.5 Chloroform, a substance once used as...Ch. 1 - APPLY 1.6 You are beachcombing on summer vacation...Ch. 1 - PRACTICE 1.7 Some radioactive materials emit a...Ch. 1 - Prob. 1.8ACh. 1 - Prob. 1.9PCh. 1 - Prob. 1.10A
Ch. 1 - Prob. 1.11PCh. 1 - Prob. 1.12ACh. 1 - Prob. 1.13PCh. 1 - APPLY 1.14 A sodium chloride solution was prepared...Ch. 1 - PRACTICE 1.15 Gemstones are weighed in carats,...Ch. 1 - PRACTICE 1.15 Gemstones are weighed in carats,...Ch. 1 - Prob. 1.17PCh. 1 - APPLY 1.18 How large, in cubic centimeters, is the...Ch. 1 - Prob. 1.19PCh. 1 - PROBLEM 1.20 Calculate the percentage Of atoms on...Ch. 1 - Prob. 1.21PCh. 1 - Prob. 1.22PCh. 1 - Which block in each of the following drawings of a...Ch. 1 - Prob. 1.24CPCh. 1 - How many milliliters of water does the graduated...Ch. 1 - Assume that you have two graduated cylinders, one...Ch. 1 - The following cylinder contains three liquids that...Ch. 1 - The following statements pertain to the...Ch. 1 - The following statements pertain to the...Ch. 1 - Prob. 1.30SPCh. 1 - Prob. 1.31SPCh. 1 - Prob. 1.32SPCh. 1 - Prob. 1.33SPCh. 1 - Prob. 1.34SPCh. 1 - Prob. 1.35SPCh. 1 - 1.36 What is the difference between mass and...Ch. 1 - Prob. 1.37SPCh. 1 - Prob. 1.38SPCh. 1 - Prob. 1.39SPCh. 1 - Prob. 1.40SPCh. 1 - Prob. 1.41SPCh. 1 - Prob. 1.42SPCh. 1 - Prob. 1.43SPCh. 1 - Prob. 1.44SPCh. 1 - Prob. 1.45SPCh. 1 - Prob. 1.46SPCh. 1 - Prob. 1.47SPCh. 1 - Prob. 1.48SPCh. 1 - Prob. 1.49SPCh. 1 - How many picograms are in 1 mg? In 35 ng?Ch. 1 - Prob. 1.51SPCh. 1 - Prob. 1.52SPCh. 1 - Prob. 1.53SPCh. 1 - How many significant figures are in each of the...Ch. 1 - Prob. 1.55SPCh. 1 - Prob. 1.56SPCh. 1 - Prob. 1.57SPCh. 1 - Prob. 1.58SPCh. 1 - Prob. 1.59SPCh. 1 - Prob. 1.60SPCh. 1 - Prob. 1.61SPCh. 1 - Prob. 1.62SPCh. 1 - Prob. 1.63SPCh. 1 - Prob. 1.64SPCh. 1 - Prob. 1.65SPCh. 1 - Carry Out the following conversions: (a) How many...Ch. 1 - Prob. 1.67SPCh. 1 - Prob. 1.68SPCh. 1 - Prob. 1.69SPCh. 1 - Weights in England are commonly measured in...Ch. 1 - Prob. 1.71SPCh. 1 - Prob. 1.72SPCh. 1 - Prob. 1.73SPCh. 1 - The normal body temperature of a goat is 39.90C...Ch. 1 - Prob. 1.75SPCh. 1 - Prob. 1.76SPCh. 1 - Prob. 1.77SPCh. 1 - Suppose you were dissatisfied with both Celsius...Ch. 1 - Answer parts (a)-(d) of Problem 1.78 assuming that...Ch. 1 - Prob. 1.80SPCh. 1 - Prob. 1.81SPCh. 1 - Prob. 1.82SPCh. 1 - Prob. 1.83SPCh. 1 - Prob. 1.84SPCh. 1 - The density Of silver is 10.5 g/cm3. What is the...Ch. 1 - Prob. 1.86SPCh. 1 - Prob. 1.87SPCh. 1 - Prob. 1.88SPCh. 1 - An experiment is performed to determine if pennies...Ch. 1 - Which has more kinetic energy, a 1400 kg car...Ch. 1 - Prob. 1.91SPCh. 1 - Prob. 1.92SPCh. 1 - Prob. 1.93SPCh. 1 - Prob. 1.94SPCh. 1 - Prob. 1.95SPCh. 1 - Prob. 1.96CPCh. 1 - Lignum vitae is a hard, durable, and extremely...Ch. 1 - Prob. 1.98CPCh. 1 - Prob. 1.99CPCh. 1 - Prob. 1.100CPCh. 1 - Prob. 1.101CPCh. 1 - Answer the following questions: (a) An old rule of...Ch. 1 - A 1.0 ounce piece of chocolate contains 15 mg of...Ch. 1 - Prob. 1.104CPCh. 1 - Prob. 1.105CPCh. 1 - Prob. 1.106CPCh. 1 - Prob. 1.107CPCh. 1 - Prob. 1.108CPCh. 1 - Prob. 1.109CPCh. 1 - Prob. 1.110CPCh. 1 - Prob. 1.111CPCh. 1 - Brass is a copper—zinc alloy. What is the mass in...Ch. 1 - Prob. 1.113CPCh. 1 - The element gallium (Ga) has the second largest...Ch. 1 - Distances over land are measured in statute miles...
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