General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Chapter 16, Problem 16.22CP
What are the signs (+, –, or 0) of ΔH, ΔS, and ΔG for the spontaneous condensation of a vapor to a liquid? Explain.
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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 16 Solutions
General Chemistry: Atoms First
Ch. 16.1 - Predicting the Sign of S Predict the sign of S in...Ch. 16.2 - Prob. 16.2PCh. 16.2 - Prob. 16.3CPCh. 16.3 - Which state has the higher entropy? Explain in...Ch. 16.5 - Calculate the standard entropy of reaction at 25C...Ch. 16.6 - By determining the sign of Stotal, show whether...Ch. 16.7 - Consider the decomposition of gaseous N2O4:...Ch. 16.7 - The following data apply to the vaporization of...Ch. 16.7 - What are the signs (+, , or 0) of H, S, and G for...Ch. 16.8 - Consider the thermal decomposition of calcium...
Ch. 16.8 - Consider the following endothermic decomposition...Ch. 16.9 - (a)Using values of Gf in Appendix B, calculate the...Ch. 16.10 - Calculate G for the formation of ethylene (C2H4)...Ch. 16.10 - Consider the following gas-phase reaction of A2...Ch. 16.11 - Given the data in Appendix B, calculate Kp at 25 C...Ch. 16.11 - Use the data in Appendix B to calculate the vapor...Ch. 16.11 - At 25 C, Kw for the dissociation of water is 1.0 ...Ch. 16.11 - Prob. 16.18PCh. 16.11 - Prob. 16.19PCh. 16 - Ideal gases A (red spheres) and B (blue spheres)...Ch. 16 - What are the signs (+, , or 0) of H, S, and G for...Ch. 16 - What are the signs (+, , or 0) of H, S, and G for...Ch. 16 - An ideal gas is compressed at constant...Ch. 16 - Consider the following spontaneous reaction of A2...Ch. 16 - Consider the dissociation reactionA2(g)2A(g). The...Ch. 16 - Prob. 16.26CPCh. 16 - Prob. 16.27CPCh. 16 - Prob. 16.28CPCh. 16 - Prob. 16.29CPCh. 16 - Prob. 16.30SPCh. 16 - Prob. 16.31SPCh. 16 - Prob. 16.32SPCh. 16 - Prob. 16.33SPCh. 16 - Prob. 16.34SPCh. 16 - Prob. 16.35SPCh. 16 - Prob. 16.36SPCh. 16 - Prob. 16.37SPCh. 16 - Prob. 16.38SPCh. 16 - Predict the sign of S for each process in Problem...Ch. 16 - Prob. 16.40SPCh. 16 - Prob. 16.41SPCh. 16 - Prob. 16.42SPCh. 16 - Prob. 16.43SPCh. 16 - Prob. 16.44SPCh. 16 - Prob. 16.45SPCh. 16 - Which state in each of the following pairs has the...Ch. 16 - Which State in each of the following pairs has the...Ch. 16 - Prob. 16.48SPCh. 16 - Prob. 16.49SPCh. 16 - Prob. 16.50SPCh. 16 - Which substance in each of the following pairs...Ch. 16 - Prob. 16.52SPCh. 16 - Prob. 16.53SPCh. 16 - Prob. 16.54SPCh. 16 - Prob. 16.55SPCh. 16 - Prob. 16.56SPCh. 16 - Prob. 16.57SPCh. 16 - Prob. 16.58SPCh. 16 - Prob. 16.59SPCh. 16 - Prob. 16.60SPCh. 16 - Prob. 16.61SPCh. 16 - In lightning storms, oxygen is converted to ozone:...Ch. 16 - Sulfur dioxide emitted from coal-fired power...Ch. 16 - Elemental mercury can be produced from its oxide:...Ch. 16 - Prob. 16.65SPCh. 16 - For the vaporization of benzene, Hvap = 30.7kJ/mol...Ch. 16 - For the melting of sodium chloride, Hfusion =...Ch. 16 - Prob. 16.68SPCh. 16 - Prob. 16.69SPCh. 16 - Prob. 16.70SPCh. 16 - Prob. 16.71SPCh. 16 - Prob. 16.72SPCh. 16 - Given the data in Problem 16.67, calculate G for...Ch. 16 - Prob. 16.74SPCh. 16 - Prob. 16.75SPCh. 16 - Prob. 16.76SPCh. 16 - Prob. 16.77SPCh. 16 - Prob. 16.78SPCh. 16 - Use the data in Appendix B to calculate H and S...Ch. 16 - Prob. 16.80SPCh. 16 - Prob. 16.81SPCh. 16 - Use the data in Appendix B to tell which of the...Ch. 16 - Prob. 16.83SPCh. 16 - Prob. 16.84SPCh. 16 - Prob. 16.85SPCh. 16 - Ethanol is manufactured in industry by the...Ch. 16 - Sulfur dioxide in the effluent gases from...Ch. 16 - Prob. 16.88SPCh. 16 - Prob. 16.89SPCh. 16 - Prob. 16.90SPCh. 16 - Prob. 16.91SPCh. 16 - Prob. 16.92SPCh. 16 - What is G for the formation of solid uranium...Ch. 16 - Prob. 16.94SPCh. 16 - Prob. 16.95SPCh. 16 - What is the relationship between the standard...Ch. 16 - What is the relationship between the standard...Ch. 16 - Prob. 16.98SPCh. 16 - Prob. 16.99SPCh. 16 - Prob. 16.100SPCh. 16 - At 25 C, Ka for acid dissociation of aspirin...Ch. 16 - Prob. 16.102SPCh. 16 - Calculate the equilibrium partial pressure of...Ch. 16 - Ethylene oxide, C2H4O, is used to make antifreeze...Ch. 16 - The first step in the commercial production of...Ch. 16 - Prob. 16.106CHPCh. 16 - Prob. 16.107CHPCh. 16 - Prob. 16.108CHPCh. 16 - Prob. 16.109CHPCh. 16 - Prob. 16.110CHPCh. 16 - The standard free-energy change at 25 C for the...Ch. 16 - Prob. 16.112CHPCh. 16 - Prob. 16.113CHPCh. 16 - Prob. 16.114CHPCh. 16 - Prob. 16.115CHPCh. 16 - Use the data in Appendix B to calculate H, S, and...Ch. 16 - Troutons rule says that the ratio of the molar...Ch. 16 - Prob. 16.118CHPCh. 16 - Prob. 16.119CHPCh. 16 - Prob. 16.120CHPCh. 16 - Use the data in Appendix B to calculate the...Ch. 16 - Prob. 16.122CHPCh. 16 - Prob. 16.123CHPCh. 16 - Prob. 16.124CHPCh. 16 - Prob. 16.125CHPCh. 16 - Prob. 16.126CHPCh. 16 - Prob. 16.127CHPCh. 16 - Prob. 16.128CHPCh. 16 - Prob. 16.129CHPCh. 16 - Prob. 16.130CHPCh. 16 - Prob. 16.131CHPCh. 16 - Prob. 16.132CHPCh. 16 - Prob. 16.133MPCh. 16 - Prob. 16.134MPCh. 16 - One step in the commercial synthesis of sulfuric...Ch. 16 - Prob. 16.136MPCh. 16 - Prob. 16.137MPCh. 16 - A 1.00 L volume of gaseous ammonia at 25.0 C and...Ch. 16 - Consider the unbalanced equation:...Ch. 16 - A mixture of NO2 and N2O4, each at an initial...
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