EBK WEBASSIGN FOR ZUMDAHL'S CHEMICAL PR
8th Edition
ISBN: 9780357119099
Author: ZUMDAHL
Publisher: VST
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Chapter 2, Problem 49E
The compounds
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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.
acids:
0.2 mol of KOH is added to
1.0 L of a 0.5 M HF
solution.
bases:
Х
other: ☐
acids:
0.10 mol of HI is added to
1.0 L of a solution that is
1.4M in both HF and NaF.
bases:
other: ☐
0,0,...
ด
?
18
Ar
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 NH3 is a weak base.
acids: ☐
1.8 mol of HCl is added to
1.0 L of a 1.0M NH3
bases: ☐
solution.
other: ☐
0.18 mol of HNO3 is added
to 1.0 L of a solution that is
1.4M in both NH3 and
NH₁Br.
acids:
bases: ☐
other: ☐
0,0,...
?
000
18
Ar
B
1
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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Chapter 2 Solutions
EBK WEBASSIGN FOR ZUMDAHL'S CHEMICAL PR
Ch. 2 - You may have noticed that when water boils, you...Ch. 2 - Which of the following is true about an individual...Ch. 2 - How would you go about finding the number of...Ch. 2 - These questions concern the work of J. J. Thomson:...Ch. 2 - Heat is applied to an ice cube in a closed...Ch. 2 - You have a chemical in a sealed glass container...Ch. 2 - Prob. 7DQCh. 2 - One of the best indications of a useful theory is...Ch. 2 - Prob. 9DQCh. 2 - How does Dalton’s atomic theory account for each...
Ch. 2 - What refinements had to be made in Dalton’s...Ch. 2 - Which (if any) of the following can be determined...Ch. 2 - The average mass of a carbon atom is 12.011....Ch. 2 - Which of the following explain how an ion is...Ch. 2 - Prob. 15DQCh. 2 - Prob. 16DQCh. 2 - Why is calcium dichloride not the correct...Ch. 2 - Explain the law of conservation of mass, the law...Ch. 2 - Prob. 19ECh. 2 - When mixtures of gaseous H2 and gaseous Cl2 react,...Ch. 2 - Observations of the reaction between nitrogen gas...Ch. 2 - Prob. 22ECh. 2 - Hydrazine, ammonia, and hydrogen azide all contain...Ch. 2 - Consider 80.0-g samples of two different compounds...Ch. 2 - Early tables of atomic weights (masses) were...Ch. 2 - What evidence led to the conclusion that cathode...Ch. 2 - Prob. 27ECh. 2 - Prob. 28ECh. 2 - A chemist in a galaxy far, far away performed the...Ch. 2 - Do the proton and the neutron have exactly the...Ch. 2 - Consider Ernest Rutherford’s a-particle...Ch. 2 - Distinguish between the following terms. a....Ch. 2 - What is the distinction between atomic number and...Ch. 2 - Prob. 34ECh. 2 - a. List the noble gas elements. Which of the noble...Ch. 2 - Consider the elements of the carbon family: C, Si,...Ch. 2 - Prob. 37ECh. 2 - The number of protons in an atom determines the...Ch. 2 - For lighter, stable isotopes, the ratio of the...Ch. 2 - For each of the following sets of elements, label...Ch. 2 - Prob. 41ECh. 2 - Write the atomic symbol (ZAX) for each of the...Ch. 2 - Prob. 43ECh. 2 - Prob. 44ECh. 2 - Prob. 45ECh. 2 - Prob. 46ECh. 2 - Would you expect each of the following atoms to...Ch. 2 - Prob. 48ECh. 2 - The compounds AlCl3,CrCl3,andICl3 have similar...Ch. 2 - Each of the following compounds has three...Ch. 2 - Prob. 51ECh. 2 - Prob. 52ECh. 2 - Prob. 53ECh. 2 - Prob. 54ECh. 2 - Prob. 55ECh. 2 - Prob. 56ECh. 2 - Prob. 57ECh. 2 - Prob. 58ECh. 2 - Prob. 59ECh. 2 - Prob. 60ECh. 2 - Prob. 61ECh. 2 - Prob. 62AECh. 2 - Prob. 63AECh. 2 - What discoveries were made by J. J. Thomson,...Ch. 2 - Prob. 65AECh. 2 - Prob. 66AECh. 2 - A sample of chloroform is found to contain 12.0 g...Ch. 2 - In a reaction, 34.0 g of chromium(III) oxide...Ch. 2 - Prob. 69AECh. 2 - Prob. 70AECh. 2 - Prob. 71AECh. 2 - Prob. 72AECh. 2 - Prob. 73AECh. 2 - Prob. 74AECh. 2 - Prob. 75AECh. 2 - Prob. 76AECh. 2 - Prob. 77AECh. 2 - Prob. 78AECh. 2 - Prob. 79AECh. 2 - Identify each of the following elements. a. a...Ch. 2 - A certain element has only two naturally occurring...Ch. 2 - Prob. 82AECh. 2 - Which of the following is(are) correct? a. 40Ca2+...Ch. 2 - Prob. 84AECh. 2 - Prob. 85AECh. 2 - Complete the following table to predict whether...Ch. 2 - Which of the following statements is(are) correct?...Ch. 2 - Prob. 88CPCh. 2 - Each of the statements below is true, but Dalton...Ch. 2 - You take three compounds, each consisting of two...Ch. 2 - Two elements, R and Q, combine to form two...Ch. 2 - A single molecule has a mass of 7.3110223g ....Ch. 2 - A combustion reaction involves the reaction of a...Ch. 2 - You have two distinct gaseous compounds made from...Ch. 2 - You have gone back in time and are working with...
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- Identifying the major species in weak acid or weak base equilibria Your answer is incorrect. • Row 2: Your answer is incorrect. • Row 3: Your answer is incorrect. • Row 6: Your answer is incorrect. 0/5 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. acids: HF 0.1 mol of NaOH is added to 1.0 L of a 0.7M HF solution. bases: 0.13 mol of HCl is added to 1.0 L of a solution that is 1.0M in both HF and KF. Exponent other: F acids: HF bases: F other: K 1 0,0,... ? 000 18 Ararrow_forwardUsing reaction free energy to predict equilibrium composition Consider the following equilibrium: 2NOCI (g) 2NO (g) + Cl2 (g) AGº =41. kJ Now suppose a reaction vessel is filled with 4.50 atm of nitrosyl chloride (NOCI) and 6.38 atm of chlorine (C12) at 212. °C. Answer the following questions about this system: ? rise Under these conditions, will the pressure of NOCI tend to rise or fall? x10 fall Is it possible to reverse this tendency by adding NO? In other words, if you said the pressure of NOCI will tend to rise, can that be changed to a tendency to fall by adding NO? Similarly, if you said the pressure of NOCI will tend to fall, can that be changed to a tendency to rise by adding NO? yes no If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO needed to reverse it. Round your answer to 2 significant digits. 0.035 atm ✓ G 00. 18 Ararrow_forwardHighlight each glycosidic bond in the molecule below. Then answer the questions in the table under the drawing area. HO- HO- -0 OH OH HO NG HO- HO- OH OH OH OH NG OHarrow_forward
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