Physical Chemistry
2nd Edition
ISBN: 9781285969770
Author: Ball
Publisher: Cengage
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Chapter 5, Problem 5.10E
If
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111
States of Matter
Understanding conceptual components of the enthalpy of solution
0/5
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A small amount of acetonitrile (CH, CN) is dissolved in a large amount of water. Imagine separating this process into the four stages sketched below. (These
sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.)
CH,CN
H₂O
B
88
C
Use these sketches to answer the questions in the table below.
The enthalpy of solution AH is negative
soln
when CH3CN dissolves in water. Use this
information to list the stages in order of increasing
enthalpy.
Would heat be absorbed or released if the system
moved from Stage C to D?
What force would oppose or favor the system
moving from Stage C to D? Check all that apply.
1
absorbed
O released
neither absorbed nor released.
none
O ionic bonding force
covalent bonding force…
In a system with an anodic overpotential, the variation of ŋ as a function of
the current density:
1. at low fields is linear 2. at higher fields, it follows Tafel's law
Find the range of current densities for which the overpotential has the same
value as when calculated for cases 1 and 2 (maximum relative difference of
5% with respect to the behavior for higher fields). To which overpotential
range does this correspond?
Data: 10 = 1.5 mA cm², T = 300°C, ẞ = 0.64, R = 8.314 J K 1 mol¹ and F = 96485
C mol-1.
Indicate 10.6 with only one significant figure.
Chapter 5 Solutions
Physical Chemistry
Ch. 5 - 5.1. Can a battery that has a voltage be...Ch. 5 - 5.2. What is the difference between a static...Ch. 5 - Which system in each pair best represents...Ch. 5 -
5.4. Supersaturated solutions can be made in...Ch. 5 -
5.5. Following is a chemical reaction between...Ch. 5 - 5.6. The following is a reaction with its initial...Ch. 5 - The following is a reaction with initial amounts...Ch. 5 - 5.8. The hemoglobin in blood establishes an...Ch. 5 - Prob. 5.9ECh. 5 - 5.10. If and gases were contained in a system...
Ch. 5 - 5.11. Determine the numerical value of Q for the...Ch. 5 - 5.12. True or false: If all the partial pressures...Ch. 5 - For the reaction 2SO3(g)2SO2(g)+O2(g) when 2mol of...Ch. 5 - 5.14. Determine and for the following reaction at...Ch. 5 - 5.15. Consider the reaction
If the partial...Ch. 5 -
5.16. In atmospheric chemistry, the following...Ch. 5 - Prob. 5.17ECh. 5 - 5.18. Hydrogen cyanide can isomerize to hydrogen...Ch. 5 - 5.19. Assume that a reaction exists such that...Ch. 5 - Prob. 5.20ECh. 5 - 5.21. Show that if the coefficients of a balanced...Ch. 5 - 5.22. True or false: If for a gas-phase reaction,...Ch. 5 - 5.23. The balanced chemical reaction for the...Ch. 5 - The answers in exercise 5.23 should show that...Ch. 5 - At a high enough temperature, the equilibrium...Ch. 5 - Prob. 5.26ECh. 5 - 5.27. Nitrogen dioxide,, dimerizes easily to form...Ch. 5 - 5.28. Another nitrogen-oxygen reaction of some...Ch. 5 - Prob. 5.29ECh. 5 - Prob. 5.30ECh. 5 - Prob. 5.31ECh. 5 - 5.32. For the reaction
. (a) Using in Appendix...Ch. 5 - 5.33. Use the data in Appendix to calculate ...Ch. 5 - 5.34. The of diamond, a crystalline form of...Ch. 5 - 5.35. The densities of graphite and diamond are ...Ch. 5 - Buckminsterfullerene, C60, is a spherical molecule...Ch. 5 - Prob. 5.37ECh. 5 - At what pressure does H2O have an activity of...Ch. 5 - The bisulfate or hydrogen sulfate anion, HSO4, is...Ch. 5 - Prob. 5.40ECh. 5 - Write the equilibrium constant expression for each...Ch. 5 - Prob. 5.42ECh. 5 - For the given chemical equilibrium, these data are...Ch. 5 - Biological standard states include specifying a...Ch. 5 - a At 25.0C, Kw for the autoionization of water is...Ch. 5 - 5.46. For a reaction whose standard enthalpy...Ch. 5 - 5.47. For the reaction
and . Estimate for this...Ch. 5 - 5.48. The isotope exchange reaction
has an...Ch. 5 - 5.49. Consider the following equilibrium:
What...Ch. 5 - 5.50. For the equilibrium
Equilibrium partial...Ch. 5 - The decomposition of NaHCO3, used in kitchens to...Ch. 5 - 5.52. For the equilibrium
at,. In a flask, of...Ch. 5 - Prob. 5.53ECh. 5 - 5.54. For the reaction
The equilibrium...Ch. 5 - Prob. 5.55ECh. 5 - 5.56. Of the amino acids listed in Table , which...Ch. 5 - 5.57. Determine the concentration of the three...Ch. 5 - 5.58. The formation of zwitterionic glycine, ,...Ch. 5 - 5.59. Monosodium glutamate, or MSG, is the sodium...Ch. 5 - Prob. 5.60ECh. 5 - Consider the balanced chemical reaction...Ch. 5 - For the gas-phase reaction 2H2+O22H2O rxnG is...Ch. 5 - Prob. 5.63ECh. 5 - Prob. 5.64E
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