Owlv2 With Mindtap Reader, 1 Term (6 Months) Printed Access Card For Tro's Chemistry In Focus: A Molecular View Of Our World, 7th
7th Edition
ISBN: 9781337399807
Author: Tro, Nivaldo J.
Publisher: Cengage Learning
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Chapter 13, Problem 43E
Suppose that the stomach contains
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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 13 Solutions
Owlv2 With Mindtap Reader, 1 Term (6 Months) Printed Access Card For Tro's Chemistry In Focus: A Molecular View Of Our World, 7th
Ch. 13 - Which property is not generally associated with...Ch. 13 - Prob. 2SCCh. 13 - The ideal pH of a swimming pool is 7.2. You...Ch. 13 - Prob. 13.1YTCh. 13 - Identify the Brnsted-Lowry acid and base in the...Ch. 13 - Prob. 1ECh. 13 - What are the properties of acids?Ch. 13 - Prob. 3ECh. 13 - Prob. 4ECh. 13 - List five common laboratory acids and their uses.
Ch. 13 - Why are bases not commonly found in foods?Ch. 13 - List four common laboratory bases and their uses.Ch. 13 - What are the Arrhenius definitions of acids and...Ch. 13 - What are the Brnsted-Lowry definitions of acids...Ch. 13 - What is the difference between a strong acid and a...Ch. 13 - Prob. 11ECh. 13 - What pH range is considered acidic? Basic?...Ch. 13 - What acid is responsible for the sour taste of...Ch. 13 - What is pickling? What acid is responsible for the...Ch. 13 - Prob. 15ECh. 13 - Prob. 16ECh. 13 - List several common acids and where they might be...Ch. 13 - Prob. 18ECh. 13 - Prob. 19ECh. 13 - What causes acid indigestion? List some common...Ch. 13 - Prob. 21ECh. 13 - Explain how a leavening agent works.Ch. 13 - Prob. 23ECh. 13 - Prob. 24ECh. 13 - Prob. 25ECh. 13 - Prob. 26ECh. 13 - Prob. 27ECh. 13 - Prob. 28ECh. 13 - Write a chemical equation to show the...Ch. 13 - Write a chemical equation to show the...Ch. 13 - Identify the Brnsted-Lowry acid and base in each...Ch. 13 - Identify the Brnsted-Lowry acid and base in each...Ch. 13 - Write a chemical equation using Lewis structures...Ch. 13 - Write a chemical equation using Lewis structures...Ch. 13 - A chemist makes two solutions. One is a 0.01-MHCl...Ch. 13 - A chemist makes a 0.001-MNaOH solution and a...Ch. 13 - Give the pH that corresponds to each solution and...Ch. 13 - Give the pH that corresponds to each solution and...Ch. 13 - What is the [H3O+] in a solution with a pH of 4?Ch. 13 - What is the [H3O+] in a solution with a pH of 11?Ch. 13 - Write chemical reactions to show how each antacid...Ch. 13 - Write chemical reactions to show how each antacid...Ch. 13 - Suppose that the stomach contains...Ch. 13 - Suppose that 250.0 mL of a basic solution is 0.100...Ch. 13 - Prob. 45ECh. 13 - Write a chemical reaction to show how NO2 forms...Ch. 13 - Prob. 47ECh. 13 - Prob. 50ECh. 13 - Determine from the following molecular view of a...Ch. 13 - Determine from the following molecular view of a...
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- ● Biological Macromolecules Identifying the parts of a disaccharide Take a look at this molecule, and then answer the questions in the table below it. CH2OH O H H H OH OH OH H H CH2OH H O OH H OH H H H H OH Is this a reducing sugar? Does this molecule contain a glycosidic bond? If you said this molecule does contain a glycosidic bond, write the symbol describing it. If you said this molecule does contain a glycosidic bond, write the common names (including anomer and enantiomer labels) of the molecules that would be released if that bond were hydrolyzed. If there's more than one molecule, separate each name with a comma. Explanation Check O yes X O no ○ yes O no Uarrow_forwardThe aim of the lab is to measure the sodium content from tomato sauce using the Mohr titration method. There are two groups being: Regular Tomato sauce & Salt Reduced tomato sauce QUESTION: State how you would prepare both Regular & Salt reduced tomato sauce samples for chemical analysis using the Mohr titration methodarrow_forwardUsing 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 The reverse of this reaction is always spontaneous but proceeds faster at temperatures above -48. °C. ΔΗ is (pick one) ✓ AS is (pick one) B This reaction is spontaneous except below 114. °C but proceeds at a slower rate below 135. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is C This reaction is exothermic and proceeds faster at temperatures above -43. °C. (pick one) AS is (pick one) v Х 5 ? 18 Ararrow_forward
- 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
- K Most Reactive Na (3 pts) Can the metal activity series (shown on the right) or a standard reduction potential table explain why potassium metal can be prepared from the reaction of molten KCI and Na metal but sodium metal is not prepared from the reaction of molten NaCl and K metal? Show how (not). Ca Mg Al с Zn Fe Sn Pb H Cu Ag Au Least Reactivearrow_forward(2 pts) Why is O2 more stable as a diatomic molecule than S2?arrow_forwardDraw the Lewis structure for the polyatomic phosphite (PO¾³¯) a anion. Be sure to include all resonance structures that satisfy the octet rule. C I A [ ]¯arrow_forward
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