Chemistry: A Molecular Approach
3rd Edition
ISBN: 9780321809247
Author: Nivaldo J. Tro
Publisher: Prentice Hall
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Chapter 14, Problem 37E
Interpretation Introduction
To determine: The concentrations and equilibrium constant in the table.
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Using the conditions of spontaneity to deduce the signs of AH and AS
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
A
This reaction is always spontaneous, but
proceeds slower at temperatures above
120. °C.
ΔΗ is
(pick one)
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous except above
117. °C.
AS is
(pick one)
ΔΗ is
(pick one)
This reaction is slower below 20. °C than
C
above.
AS is
|(pick one)
?
18
Ar
1
Calculating the pH at equivalence of a titration
Try Again
Your answer is incorrect.
0/5
a
A chemist titrates 70.0 mL of a 0.7089 M hydrocyanic acid (HCN) solution with 0.4574M KOH solution at 25 °C. Calculate the pH at equivalence. The pK of
hydrocyanic acid is 9.21.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.
pH
=
11.43]
G
00.
18
Ar
B•
Biological Macromolecules
Naming and drawing the products of aldose oxidation and reduction
aw a Fischer projection of the molecule that would produce L-ribonic acid if it were subjected to mildly oxidizing reaction conditions.
Click and drag to start drawing a
structure.
X
AP
‡
1/5
Naor
Explanation
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Chapter 14 Solutions
Chemistry: A Molecular Approach
Ch. 14 - Prob. 1SAQCh. 14 - Q2. The equilibrium constant for the reaction...Ch. 14 - Q3. Use the data shown here to find the...Ch. 14 - Prob. 4SAQCh. 14 - Prob. 5SAQCh. 14 - Q6. For the reaction 2 A(g) B(g), the equilibrium...Ch. 14 - Q7. Consider the reaction between iodine gas and...Ch. 14 - Prob. 8SAQCh. 14 - Prob. 9SAQCh. 14 - Prob. 10SAQ
Ch. 14 - Prob. 11SAQCh. 14 - Prob. 12SAQCh. 14 - 1. How does a developing fetus get oxygen in the...Ch. 14 - Prob. 2ECh. 14 - Prob. 3ECh. 14 - Prob. 4ECh. 14 - Prob. 5ECh. 14 - Prob. 6ECh. 14 - Prob. 7ECh. 14 - Prob. 8ECh. 14 - Prob. 9ECh. 14 - Prob. 10ECh. 14 - Prob. 11ECh. 14 - Prob. 12ECh. 14 - Prob. 13ECh. 14 - Prob. 14ECh. 14 - Prob. 15ECh. 14 - Prob. 16ECh. 14 - Prob. 17ECh. 14 - Prob. 18ECh. 14 - Prob. 19ECh. 14 - Prob. 20ECh. 14 - Prob. 21ECh. 14 - Prob. 22ECh. 14 - 23. When this reaction comes to equilibrium, will...Ch. 14 - Prob. 24ECh. 14 - 25. H2 and I2 are combined in a flask and allowed...Ch. 14 - Prob. 26ECh. 14 - Prob. 27ECh. 14 - 28. This reaction has an equilibrium constant of...Ch. 14 - 29. Consider the reactions and their respective...Ch. 14 - 30. Use the reactions and their equilibrium...Ch. 14 - 31. Calculate Kc for each reaction.
a. I2(g) 2...Ch. 14 - 32. Calculate Kp for each reaction.
a. N2O4(g) 2...Ch. 14 - 33. Write an equilibrium expression for each...Ch. 14 - 34. Find and fix the mistake in the equilibrium...Ch. 14 - 35. Consider the reaction:
CO(g) + 2 H2(g) ...Ch. 14 - 36. Consider the reaction:
NH4HS(s) NH3(g) +...Ch. 14 - 37. Consider the reaction:
N2(g) + 3 H2(g) 2...Ch. 14 - 38. Consider the following reaction:
H2(g) + I2(g)...Ch. 14 - 39. Consider the reaction:
2 NO(g) + Br2(g) 2...Ch. 14 - 40. Consider the reaction:
SO2Cl2(g) SO2(g) +...Ch. 14 - 41. For the reaction A(g) 2 B(g), a reaction...Ch. 14 - 42. For the reaction 2 A(g) B(g) + 2 C(g), a...Ch. 14 - 43. Consider the reaction:
Fe3+(aq) + SCN–(aq) ...Ch. 14 - 44. Consider the reaction:
SO2Cl2(g) SO2(g) +...Ch. 14 - 45. Consider the reaction:
H2(g) + I2(g) 2...Ch. 14 - 46. Consider the reaction:
CO(g) + 2 H2(g) ...Ch. 14 - 47. Consider the reaction:
NH4HS(s) NH3(g) +...Ch. 14 - 48. Consider the reaction:
2 H2S(g) 2 H2(g) +...Ch. 14 - 49. Silver sulfate dissolves in water according to...Ch. 14 - 50. Nitrogen dioxide dimerizes according to the...Ch. 14 - 51. Consider the reaction and the associated...Ch. 14 - 52. Consider the reaction and the associated...Ch. 14 - 53. For the reaction shown here, Kc = 0.513 at 500...Ch. 14 - 54. For the reaction shown here, Kc = 255 at 1000...Ch. 14 - 55. Consider the reaction:
NiO(s) + CO(g) Ni(s) +...Ch. 14 - 56. Consider the reaction:
CO(g) + H2O(g) CO2(g)...Ch. 14 - 57. Consider the reaction:
HC2H3O2(aq) + H2O(l) ...Ch. 14 - 58. Consider the reaction:
SO2Cl2(g) SO2(g) +...Ch. 14 - 59. Consider the reaction:
Br2(g) + Cl2(g) 2...Ch. 14 - 60. Consider the reaction:
CO(g) + H2O(g) CO2(g)...Ch. 14 - Prob. 61ECh. 14 - Prob. 62ECh. 14 - Prob. 63ECh. 14 - 64. Consider this reaction at equilibrium:
2...Ch. 14 - 65. Consider this reaction at equilibrium:
2...Ch. 14 - 66. Consider this reaction at equilibrium:
C(s) +...Ch. 14 - 67. Each reaction is allowed to come to...Ch. 14 - Prob. 68ECh. 14 - Prob. 69ECh. 14 - Prob. 70ECh. 14 - Prob. 71ECh. 14 - Prob. 72ECh. 14 - 73. Carbon monoxide replaces oxygen in oxygenated...Ch. 14 - Prob. 74ECh. 14 - Prob. 75ECh. 14 - 76. A mixture of water and graphite is heated to...Ch. 14 - 77. At 650 K, the reaction MgCO3(s) MgO(s) +...Ch. 14 - 78. A system at equilibrium contains I2(g) at a...Ch. 14 - Prob. 79ECh. 14 - Prob. 80ECh. 14 - Prob. 81ECh. 14 - Prob. 82ECh. 14 - Prob. 83ECh. 14 - Prob. 84ECh. 14 - 85. The system described by the reaction: CO(g) +...Ch. 14 - Prob. 86ECh. 14 - 87. At 70 K, CCl4 decomposes to carbon and...Ch. 14 - 88. The equilibrium constant for the reaction...Ch. 14 - 89. A sample of CaCO3(s) is introduced into a...Ch. 14 - Prob. 90ECh. 14 - Prob. 91ECh. 14 - Prob. 92ECh. 14 - Prob. 93ECh. 14 - Prob. 94ECh. 14 - Prob. 95ECh. 14 - Prob. 96ECh. 14 - Prob. 97ECh. 14 - 98. When N2O5(g) is heated, it dissociates into...Ch. 14 - 99. A sample of SO3 is introduced into an...Ch. 14 - 100. A reaction A(g) B(g) has an equilibrium...Ch. 14 - Prob. 101ECh. 14 - Prob. 102ECh. 14 - Prob. 103ECh. 14 - Prob. 104E
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- ion. A student proposes the following Lewis structure for the perchlorate (CIO) io : :0: : Cl : - - : :0: ك Assign a formal charge to each atom in the student's Lewis structure. atom central O formal charge ☐ top O ☐ right O ☐ bottom O ☐ Cl ☐arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Yes. Is the proposed Lewis structure reasonable? Cl- : 2: :Z: :Z: N—N : 0: C C1: O CO No, it has the wrong number of valence electrons. The correct number is: ☐ No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* ☐ Yes. No, it has the wrong number of valence electrons. The correct number is: ☐ No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* | Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* | If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0". ☑arrow_forwardUse the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions ΔΗ is (pick one) A This reaction is faster above 103. °C than below. AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous only above -9. °C. AS is (pick one) ΔΗ is (pick one) C The reverse of this reaction is always spontaneous. AS is (pick one) 18 Ararrow_forward
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