Organic Chemistry - With Access (Custom)
9th Edition
ISBN: 9781337031745
Author: McMurry
Publisher: Cengage
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Chapter 5.SE, Problem 60AP
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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
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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 5 Solutions
Organic Chemistry - With Access (Custom)
Ch. 5.2 - Prob. 1PCh. 5.2 - Prob. 2PCh. 5.2 - Prob. 3PCh. 5.2 - Prob. 4PCh. 5.3 - Is cocaine (Worked Example 5-2) dextrorotatory or...Ch. 5.3 - Prob. 6PCh. 5.5 - Prob. 7PCh. 5.5 - Prob. 8PCh. 5.5 - Prob. 9PCh. 5.5 - Assign R or S configuration to the chirality...
Ch. 5.5 - Draw a tetrahedral representation of...Ch. 5.5 - Prob. 12PCh. 5.6 - One of the following molecules (a)–(d) is...Ch. 5.6 - Prob. 14PCh. 5.6 - Assign R or S configuration to each chirality...Ch. 5.7 - Prob. 16PCh. 5.7 - Which of the following have a meso form? (Recall...Ch. 5.7 - Does the following structure represent a meso...Ch. 5.8 - Prob. 19PCh. 5.8 - Prob. 20PCh. 5.9 - Prob. 21PCh. 5.11 - Prob. 22PCh. 5.11 - Prob. 23PCh. 5.11 - The lactic acid that builds up in tired muscles is...Ch. 5.11 - The aconitase-catalyzed addition of water to...Ch. 5.SE - Which of the following structures are identical?...Ch. 5.SE - Prob. 27VCCh. 5.SE - Prob. 28VCCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Prob. 30VCCh. 5.SE - Prob. 31APCh. 5.SE - Which of the following compounds are chiral? Draw...Ch. 5.SE - Prob. 33APCh. 5.SE - Eight alcohols have the formula C5H12O. Draw them....Ch. 5.SE - Draw compounds that fit the following...Ch. 5.SE - Prob. 36APCh. 5.SE - Prob. 37APCh. 5.SE - Prob. 38APCh. 5.SE - What is the stereochemical configuration of the...Ch. 5.SE - Prob. 40APCh. 5.SE - Prob. 41APCh. 5.SE - Prob. 42APCh. 5.SE - Prob. 43APCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Prob. 46APCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Assign R or S configurations to the chirality...Ch. 5.SE - Assign R or S stereochemistry to the chirality...Ch. 5.SE - Prob. 50APCh. 5.SE - Draw examples of the following: (a) A meso...Ch. 5.SE - Prob. 52APCh. 5.SE - Prob. 53APCh. 5.SE - Prob. 54APCh. 5.SE - On reaction with hydrogen gas by a platinum...Ch. 5.SE - Prob. 56APCh. 5.SE - Prob. 57APCh. 5.SE - One of the steps in fat metabolism is the...Ch. 5.SE - The dehydration of citrate to yield cis-aconitate,...Ch. 5.SE - The first step in the metabolism of glycerol,...Ch. 5.SE - One of the steps in fatty-acid biosynthesis is the...Ch. 5.SE - Prob. 62APCh. 5.SE - Draw tetrahedral representations of the two...Ch. 5.SE - The naturally occurring form of the amino acid...Ch. 5.SE - Prob. 65APCh. 5.SE - Prob. 66APCh. 5.SE - Prob. 67APCh. 5.SE - Allenes are compounds with adjacent carbon-carbon...Ch. 5.SE - Prob. 69APCh. 5.SE - Prob. 70APCh. 5.SE - How many stereoisomers of...Ch. 5.SE - Draw both cis- and trans-1,4-dimethylcyclohexane...Ch. 5.SE - Draw both cis- and trans-1,3-dimethylcyclohexane...Ch. 5.SE - cis-1,2-Dimethylcyclohexane is optically inactive...Ch. 5.SE - Prob. 75APCh. 5.SE - Prob. 76APCh. 5.SE - Prob. 77AP
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