Chemistry (7th Edition)
7th Edition
ISBN: 9780321943170
Author: John E. McMurry, Robert C. Fay, Jill Kirsten Robinson
Publisher: PEARSON
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Chapter 3, Problem 3.24A
APPLY 3.24 Combustion analysis was performed on 1.00 g of a compound containing C, H, and N, and 2.79 g of CO, and 0.57 g of H2O were produced. Given the mass spectrum for the compound in FIGURE 3.8, what is the empirical formula? What is the molecular formula?
FIGURE 3.8
The mass spectrum for a compound containing C, H, and N.
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Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
2NO(g) +Cl₂ (g) = 2NOC1 (g) AGº = -41. kJ
Now suppose a reaction vessel is filled with 8.90 atm of chlorine (C12) and 5.71 atm of nitrosyl chloride (NOC1) at 1075. °C. Answer the following questions
about this system:
rise
Under these conditions, will the pressure of NOCI tend to rise or fall?
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fall
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In other words, if you said the pressure of NOCI will tend to rise, can that
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pressure of NOCI will tend to fall, can that be changed to a tendency to
rise by adding NO?
yes
no
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the minimum pressure of NO needed to reverse it.
Round your answer to 2 significant digits.
atm
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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
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You will find it useful to keep in mind that HCN is a weak acid.
acids:
0.29 mol of NaOH is added
to 1.0 L of a 1.2M HCN
solution.
bases:
☑
other:
0.09 mol of HCl is added to
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0.3M in both HCN and
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Chapter 3 Solutions
Chemistry (7th Edition)
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