Chemistry: Structure and Properties, Books a la Carte PACKAGE W/MasteringChemistry, 2nd Edition
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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 7 Solutions
Chemistry: Structure and Properties, Books a la Carte PACKAGE W/MasteringChemistry, 2nd Edition
Ch. 7 - Prob. 1ECh. 7 - Prob. 2ECh. 7 - What is the difference between a physical change...Ch. 7 - What is the difference between a physical property...Ch. 7 - What is a balanced chemical equation?Ch. 7 - Why must chemical equations be balanced?Ch. 7 - What is reaction stoichiometry? What is the...Ch. 7 - In a chemical reaction, what is the limiting...Ch. 7 - In a chemical reaction, what is the theoretical...Ch. 7 - We typically calculate the percent yield using the...
Ch. 7 - Prob. 11ECh. 7 - Prob. 12ECh. 7 - Write a general equation for the reaction of an...Ch. 7 - Prob. 14ECh. 7 - Classify each change as physical or chemical....Ch. 7 - Prob. 16ECh. 7 - Prob. 17ECh. 7 - Prob. 18ECh. 7 - Classify each of the listed properties of...Ch. 7 - Prob. 20ECh. 7 - Classify each property as physical or chemical the...Ch. 7 - Prob. 22ECh. 7 - Sulfuric acid (H2SO4) is a component of acid rain...Ch. 7 - Nitric acid (HNO3) is a component of acid rain...Ch. 7 - Prob. 25ECh. 7 - Prob. 26ECh. 7 - Write a balanced chemical equation for the...Ch. 7 - Write a balanced equation for the photosynthesis...Ch. 7 - Write a balanced chemical equation for each...Ch. 7 - Write a balanced chemical equation for each...Ch. 7 - Write a balanced chemical equation for the...Ch. 7 - Write a balanced chemical equation for the...Ch. 7 - Balance each chemical equation. CO2(g) + CaSiO3(s)...Ch. 7 - Balance each chemical equation. Na2S(aq) +...Ch. 7 - Prob. 35ECh. 7 - Consider the unbalanced equation for the...Ch. 7 - Calculate how many moles of NO2 form when each...Ch. 7 - Calculate how many moles of NH3 form when each...Ch. 7 - Consider the balanced equation: SiO2(s) + 3 C(s)...Ch. 7 - Consider the balanced equation: 2 N2H4(s) +...Ch. 7 - Hydrobromic acid (HBr) dissolves solid iron...Ch. 7 - Sulfuric acid (H2SO4) dissolves aluminum metal...Ch. 7 - For each of the reactions, calculate the mass (in...Ch. 7 - For each of the reactions, calculate the mass (in...Ch. 7 - For the following reaction, determine the limiting...Ch. 7 - Find the limiting reactant for each initial amount...Ch. 7 - Consider the reaction: HCl(g) + O2(g) 2 H2O(g) +...Ch. 7 - Consider the reaction: 2 CH 3 OH(g)+3 O 2 (g)2 CO...Ch. 7 - Calculate the theoretical yield of the product (in...Ch. 7 - Calculate the theoretical yield of product (in...Ch. 7 - Zinc sulfide reacts with oxygen according to the...Ch. 7 - Iron(ll) sulfide reacts with hydrochloric acid...Ch. 7 - For the reaction shown, calculate the theoretical...Ch. 7 - For the reaction shown, calculate the theoretical...Ch. 7 - Iron(lll) oxide reacts with carbon monoxide...Ch. 7 - Elemental phosphorus reacts with chlorine gas...Ch. 7 - Lead(ll) ions can be removed from solution with...Ch. 7 - Prob. 58ECh. 7 - Urea (CH4N2O) is a common fertilizer that is...Ch. 7 - Prob. 60ECh. 7 - Prob. 61ECh. 7 - Complete and balance each combustion reaction...Ch. 7 - Prob. 63ECh. 7 - Prob. 64ECh. 7 - Prob. 65ECh. 7 - Prob. 66ECh. 7 - Prob. 67ECh. 7 - Prob. 68ECh. 7 - Prob. 69ECh. 7 - Prob. 70ECh. 7 - Aspirin can be made in the laboratory by reacting...Ch. 7 - The combustion of liquid ethanol (C2H5OH) produces...Ch. 7 - Prob. 73ECh. 7 - Prob. 74ECh. 7 - Prob. 75ECh. 7 - An important reaction that takes place in a blast...Ch. 7 - A liquid fuel mixture contains 30.35% hexane...Ch. 7 - Titanium occurs in the magnetic mineral ilmenite...Ch. 7 - A mixture of C3H8 and C2H2 has a mass of 2.0 g. It...Ch. 7 - Prob. 80ECh. 7 - Lead poisoning is a serious condition resulting...Ch. 7 - Prob. 82ECh. 7 - Metallic aluminum reacts with MnO2 at elevated...Ch. 7 - Prob. 84ECh. 7 - Consider the reaction: 4K(s)+O2(g)2K2O(s) The...Ch. 7 - Prob. 86ECh. 7 - Consider the reaction:...Ch. 7 - Prob. 88ECh. 7 - Prob. 89ECh. 7 - Prob. 90ECh. 7 - What are the correct coefficients (reading from...Ch. 7 - Prob. 2SAQCh. 7 - Prob. 3SAQCh. 7 - For the reaction shown here, 3.5 mol A is mixed...Ch. 7 - Manganese(IV) oxide reacts with aluminum to form...Ch. 7 - Sodium and chlorine react to form sodium chloride....Ch. 7 - Sulfur and fluorine react to form sulfur...Ch. 7 - A reaction has a theoretical yield of 45.8 g. When...Ch. 7 - Prob. 9SAQCh. 7 - Solid potassium chlorate (KCIO3) decomposes into...
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Similar questions
- Homework 13 (Ch17) Question 4 of 4 (1 point) | Question Attempt: 2 of 2 ✓ 1 ✓ 2 = 3 4 Time Remaining: 4:25:54 Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: 2CH3OH (g)+302 (g) → 2CO2 (g) + 4H₂O (g) Round your answer to zero decimal places. ☐ kJ x10 ☐ Subm Check 2020 Hill LLC. All Rights Reserved. Terms of Use | Privacy Cearrow_forwardIdentifying 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_forward
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