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10th Edition
ISBN: 9781337816465
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 17, Problem 112CWP
The equilibrium constant for a certain reaction increases by a factor of 6.67 when the temperature is increased from 300.0 K to 350.0 K. Calculate the standard change in enthalpy (∆H°) for this reaction (assuming ∆H° is temperature-independent).
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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
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
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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
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Chapter 17 Solutions
Bundle: Chemistry, 10th + Laboratory Handbook for General Chemistry, 3rd + Student Resource Center Printed Access Card + Student Solutions Manual for ... Access Card for Zumdahl/Zumdahl/DeCoste
Ch. 17 - Define the following: a. spontaneous process b....Ch. 17 - What is the second law of thermodynamics? For any...Ch. 17 - What determines Ssurr for a process? To calculate...Ch. 17 - The free energy change, G, for a process at...Ch. 17 - What is the third law of thermodynamics? What are...Ch. 17 - What is the standard free energy change, G, for a...Ch. 17 - If you calculate a value for G for a reaction...Ch. 17 - Consider the equation G = G + RT ln(Q). What is...Ch. 17 - Even if G is negative, the reaction may not occur....Ch. 17 - Discuss the relationship between wmax and the...
Ch. 17 - For the process A(l) A(g), which direction is...Ch. 17 - For a liquid, which would you expect to be larger,...Ch. 17 - Gas A2 reacts with gas B2 to form gas AB at a...Ch. 17 - What types of experiments can be carried out to...Ch. 17 - A friend tells you, Free energy G and pressure P...Ch. 17 - Prob. 6ALQCh. 17 - Predict the sign of S for each of the following...Ch. 17 - Is Ssurr favorable or unfavorable for exothermic...Ch. 17 - At 1 atm, liquid water is heated above 100C. For...Ch. 17 - Prob. 10ALQCh. 17 - The synthesis of glucose directly from CO2 and H2O...Ch. 17 - When the environment is contaminated by a toxic or...Ch. 17 - Entropy has been described as times arrow....Ch. 17 - Human DNA contains almost twice as much...Ch. 17 - A mixture of hydrogen gas and chlorine gas remains...Ch. 17 - Consider the following potential energy plots: a....Ch. 17 - Ssurr is sometimes called the energy disorder...Ch. 17 - Given the following illustration, what can be said...Ch. 17 - The melting point for carbon diselenide (CSe2) is...Ch. 17 - The third law of thermodynamics states that the...Ch. 17 - The deciding factor on why HF is a weak acid and...Ch. 17 - List three different ways to calculate the...Ch. 17 - What information can be determined from G for a...Ch. 17 - Monochloroethane (C2H5Cl) can be produced by the...Ch. 17 - Consider the following relationships: G = 1, H =...Ch. 17 - Consider the reaction N2O2(g) 2NO2(g) where...Ch. 17 - At 1500 K, the process I2(g)2I(g)10atm10atm is not...Ch. 17 - Which of the following processes are spontaneous?...Ch. 17 - Which of the following processes are spontaneous?...Ch. 17 - Table 16-1 shows the possible arrangements of four...Ch. 17 - Consider the following illustration of six...Ch. 17 - Consider the following energy levels, each capable...Ch. 17 - Redo Exercise 29 with two particles A and B, which...Ch. 17 - Choose the substance with the larger positional...Ch. 17 - Which of the following involve an increase in the...Ch. 17 - Predict the sign of Ssurr for the following...Ch. 17 - Calculate Ssurr for the following reactions at 25C...Ch. 17 - Given the values of H and S, which of the...Ch. 17 - At what temperatures will the following processes...Ch. 17 - Ethanethiol (C2H5SH; also called ethyl mercaptan)...Ch. 17 - For mercury, the enthalpy of vaporization is 58.51...Ch. 17 - For ammonia (NH3), the enthalpy of fusion is 5.65...Ch. 17 - The enthalpy of vaporization of ethanol is 38.7...Ch. 17 - Predict the sign of S for each of the following...Ch. 17 - Predict the sign of S for each of the following...Ch. 17 - For each of the following pairs of substances,...Ch. 17 - For each of the following pairs, which substance...Ch. 17 - Predict the sign of S and then calculate S for...Ch. 17 - Predict the sign of S and then calculate S for...Ch. 17 - For the reaction C2H2(g)+4F2(g)2CF4(g)+H2(g) S is...Ch. 17 - For the reaction CS2(g)+3O2(g)CO2(g)+2SO2(g) S is...Ch. 17 - It is quite common for a solid to change from one...Ch. 17 - Two crystalline forms of white phosphorus are...Ch. 17 - Consider the reaction 2O(g)O2(g) a. Predict the...Ch. 17 - Hydrogen cyanide is produced industrially by the...Ch. 17 - From data in Appendix 4, calculate H, S, and G for...Ch. 17 - The major industrial use of hydrogen is in the...Ch. 17 - For the reaction at 298 K, 2NO2(g)N2O4(g) the...Ch. 17 - At 100C and 1.00 atm, H = 40.6 kJ/mol for the...Ch. 17 - For the sublimation of iodine at 25C I2(s) I2(g)...Ch. 17 - Given the following data:...Ch. 17 - Given the following data:...Ch. 17 - For the reaction SF4(g)+F2(g)SF6(g) the value of G...Ch. 17 - The value of G for the reaction...Ch. 17 - Consider the reaction...Ch. 17 - Consider the reaction 2POCl3(g)2PCl3(g)+O2(g) a....Ch. 17 - Using data from Appendix 4, calculate H, S and G...Ch. 17 - Consider two reactions for the production of...Ch. 17 - Using data from Appendix 4, calculate G for the...Ch. 17 - Using data from Appendix 4, calculate G for the...Ch. 17 - Consider the reaction 2NO2(g)N2O4(g) For each of...Ch. 17 - Consider the following reaction:...Ch. 17 - One of the reactions that destroys ozone in the...Ch. 17 - Hydrogen sulfide can be removed from natural gas...Ch. 17 - Consider the following reaction at 25.0C:...Ch. 17 - The standard free energies of formation and the...Ch. 17 - Calculate G forH2O(g)+12O2(g)H2O2(g) at 600. K,...Ch. 17 - The Ostwald process for the commercial production...Ch. 17 - Cells use the hydrolysis of adenosine...Ch. 17 - One reaction that occurs in human metabolism is...Ch. 17 - Consider the following reaction at 800. K:...Ch. 17 - Consider the following reaction at 298 K:...Ch. 17 - Consider the relationship In(K)=HRT+SR The...Ch. 17 - The equilibrium constant K for the reaction...Ch. 17 - A reaction has K = 1.9 1014 at 25C and K = 9.1 ...Ch. 17 - Using Appendix 4 and the following data, determine...Ch. 17 - Some water is placed in a coffee-cup calorimeter....Ch. 17 - A green plant synthesizes glucose by...Ch. 17 - When most biological enzymes are heated, they lose...Ch. 17 - Acrylonitrile is the starting material used in...Ch. 17 - Calculate the entropy change for the vaporization...Ch. 17 - As O2(l) is cooled at 1 atm, it freezes at 54.5 K...Ch. 17 - Consider the following reaction:...Ch. 17 - Using the following data, calculate the value of...Ch. 17 - Many biochemical reactions that occur in cells...Ch. 17 - Carbon monoxide is toxic because it bonds much...Ch. 17 - In the text, the equation G=G+RTIn(Q) was derived...Ch. 17 - Prob. 101AECh. 17 - Use the equation in Exercise 79 to determine H and...Ch. 17 - Prob. 103AECh. 17 - Consider the following diagram of free energy (G)...Ch. 17 - Prob. 105CWPCh. 17 - For rubidium Hvapo=69.0KJ/mol at 686C, its boiling...Ch. 17 - Given the thermodynamic data below, calculate S...Ch. 17 - Consider the reaction: H2S(g)+SO2(g)3S(g)+2H2O(l)...Ch. 17 - The following reaction occurs in pure water:...Ch. 17 - Prob. 110CWPCh. 17 - Consider the reaction: PCl3(g)+Cl2(g)PCl5(g) At...Ch. 17 - The equilibrium constant for a certain reaction...Ch. 17 - Consider two perfectly insulated vessels. Vessel 1...Ch. 17 - Liquid water at 25C is introduced into an...Ch. 17 - Using data from Appendix 4, calculate H, G, and K...Ch. 17 - Entropy can be calculated by a relationship...Ch. 17 - a. Using the free energy profile for a simple...Ch. 17 - Consider the reaction H2(g)+Br2(g)2HBr(g) where H...Ch. 17 - Consider the system A(g)B(g) at25C. a. Assuming...Ch. 17 - The equilibrium constant for a certain reaction...Ch. 17 - If wet silver carbonate is dried in a stream of...Ch. 17 - Carbon tetrachloride (CCl4) and benzene (C6H6)...Ch. 17 - Sodium chloride is added to water (at 25C) until...Ch. 17 - You have a 1.00-L sample of hot water (90.0C)...Ch. 17 - Consider a weak acid, HX. If a 0.10-M solution of...Ch. 17 - The vaporization of ethanol C2H5OH(l) C2H5OH(g)...Ch. 17 - Some nonelectrolyte solute (molar mass = 142...Ch. 17 - For the equilibrium A(g)+2B(g)C(g) the initial...Ch. 17 - What is the pH of a 0. 125-M solution of the weak...Ch. 17 - Impure nickel, refined by smelting sulfide ores in...
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