ORGANIC CHEM W/BIOLOGICAL TOP. ACCESS
6th Edition
ISBN: 9781264382545
Author: SMITH
Publisher: MCG CUSTOM
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Chapter 2, Problem 62P
Dimethyl ether
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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 2 Solutions
ORGANIC CHEM W/BIOLOGICAL TOP. ACCESS
Ch. 2.1 - a. Which compounds are Bronsted-Lowry acids:...Ch. 2.2 - a. Draw the conjugate acid of each base:...Ch. 2.2 - Label each statement as True or False.
a. is the...Ch. 2.2 - Decide which compound is the acid and which is the...Ch. 2.2 - Draw the products formed from the acid-base...Ch. 2.3 - Which compound in each pair is the stronger acid?...Ch. 2.3 - Use a calculator when necessary to answer the...Ch. 2.3 - Rank the conjugate bases of each of group of acids...Ch. 2.3 - Problem-2.10 Considers two acids: (formic acid,)...Ch. 2.3 - Prob. 11P
Ch. 2.4 - Draw the products of each reaction and determine...Ch. 2.4 - Prob. 13PCh. 2.5 - Without reference to a pKa table, decide which...Ch. 2.5 - Rank the labeled H atoms in the following compound...Ch. 2.5 - Which hydrogen in pseudoephedrine, the nasal...Ch. 2.5 - Which compound in each pair is the stronger acid?...Ch. 2.5 - Glycolic acid, HOCH2CO2H, is the simplest member...Ch. 2.5 - Explain the apparent paradox. HBr is a stronger...Ch. 2.5 - The CH bond in acetone, (CH3)2C=O, has a pKa of...Ch. 2.5 - Prob. 23PCh. 2.5 - For each pair of compounds: [1] Which indicated H...Ch. 2.5 - Rank the compounds in each group in order of...Ch. 2.5 - Prob. 26PCh. 2.5 - Prob. 27PCh. 2.6 - Prob. 28PCh. 2.7 - Problem 2.29
Compounds like amphetamine that...Ch. 2.8 - Problem 2.30 Which species are Lewis bases?
a. b....Ch. 2.8 - Which species are Lewis acids?
a. b. c. d.
Ch. 2.8 - For each reaction, label the Lewis acid and base....Ch. 2.8 - Prob. 33PCh. 2.8 - Prob. 34PCh. 2.8 - Label the Lewis acid and base. Use curved arrow...Ch. 2 - 2.36 Propranolol is an antihypertensive agent—that...Ch. 2 - 2.37 Amphetamine is a powerful stimulant of the...Ch. 2 - 2.38 What is the conjugate acid of each base?
a....Ch. 2 - 2.39 What is the conjugate base of each acid?
a....Ch. 2 - Draw the products of each proton transfer...Ch. 2 - Prob. 43PCh. 2 - What is Ka for each compound? Use a calculator...Ch. 2 - What is the pKa for each compound? a. b. c.Ch. 2 - Which of the following bases are strong enough to...Ch. 2 - Draw the products of each reaction. Use the pKa...Ch. 2 - a. What is the conjugate acid of A? b. What is the...Ch. 2 - Dimethyl ether (CH3OCH3) and ethanol (CH3CH2OH)...Ch. 2 - 2.59 Atenolol is a (beta) blocker, a drug used to...Ch. 2 - 2.60 Use the principles in Section 2.5 to label...Ch. 2 - 2.61 Label the three most acidic hydrogen atoms in...Ch. 2 - Prob. 66PCh. 2 - 2.63 Classify each compound as a Lewis base, a...Ch. 2 - 2.64 Classify each species as a Lewis acid, a...Ch. 2 - Label the Lewis acid and Lewis base in each...Ch. 2 - 2.66 Draw the products of each Lewis acid-base...Ch. 2 - Prob. 71PCh. 2 - 2.68 Answer the following questions about the four...Ch. 2 - Prob. 73PCh. 2 - 2.70 Hydroxide can react as a Brønsted-Lowry base...Ch. 2 - 2.71 Answer the following questions about esmolol,...Ch. 2 - Prob. 76PCh. 2 - Prob. 77PCh. 2 - Prob. 82P
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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
- 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 The reverse of this reaction is always spontaneous but proceeds slower at temperatures below 41. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous except above 94. °C. AS is (pick one) This reaction is always spontaneous, but ΔΗ is (pick one) C proceeds slower at temperatures below −14. °C. AS is (pick one) Х 00. 18 Ar 무ㅎ B 1 1arrow_forwardDraw the product of the reaction shown below. Ignore inorganic byproducts. + H CH3CH2OH HCI Drawingarrow_forwardplease explain this in simple termsarrow_forward
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