EBK BASIC CHEMISTRY
6th Edition
ISBN: 9780134987088
Author: Timberlake
Publisher: PEARSON CO
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Chapter 1, Problem 62CP
The following problems are related to the topics in this chapter. However they do not all follow the chapter orc1er and they require you to combine concepts and skills from several sections. These problems will help you increase your critical thinking skills and prepare for your next exam.
Solve each of the following for z: (1.4)
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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 1 Solutions
EBK BASIC CHEMISTRY
Ch. 1.1 - In every chapter. odd-numbered exercises in the...Ch. 1.1 - In every chapter. odd-numbered exercises in the...Ch. 1.1 - Prob. 3PPCh. 1.1 - Prob. 4PPCh. 1.1 - In every chapter. odd-numbered exercises in the...Ch. 1.1 - Prob. 6PPCh. 1.2 - Identify each activity, a to f, as an observation,...Ch. 1.2 - Identify each activity, a to f. as an observation,...Ch. 1.2 - Identify each of the following as an observation,...Ch. 1.2 - Identify each of the following as an observation,...
Ch. 1.3 - Prob. 11PPCh. 1.3 - What are four things that would make it difficult...Ch. 1.3 - Prob. 13PPCh. 1.3 - Prob. 14PPCh. 1.4 - What is the place value for the bold digit? a....Ch. 1.4 - What is the place value for the bold digit? a....Ch. 1.4 - Prob. 17PPCh. 1.4 - Prob. 18PPCh. 1.4 - Prob. 19PPCh. 1.4 - Prob. 20PPCh. 1.4 - Use the following graph for problems 1.21 and...Ch. 1.4 - Use the following graph for problems 1.21 and...Ch. 1.4 - a. A clinic had 25 patients on Friday morning....Ch. 1.4 - a. At a local hospital. 35 babies were born in...Ch. 1.4 - Prob. 25PPCh. 1.4 - Prob. 26PPCh. 1.5 - Prob. 27PPCh. 1.5 - Write each of the following in scientific...Ch. 1.5 - Prob. 29PPCh. 1.5 - Write each of the following as a standard number:...Ch. 1.5 - Prob. 31PPCh. 1.5 - Prob. 32PPCh. 1.5 - Prob. 33PPCh. 1.5 - Prob. 34PPCh. 1 - The chapter sections to review are shown in...Ch. 1 - Prob. 36UTCCh. 1 - Prob. 37UTCCh. 1 - Prob. 38UTCCh. 1 - Prob. 39UTCCh. 1 - Prob. 40UTCCh. 1 - Prob. 41UTCCh. 1 - Prob. 42UTCCh. 1 - Select the correct phrase(s) to complete the...Ch. 1 - Select the correct phrase(s) to complete the...Ch. 1 - Prob. 45APPCh. 1 - Prob. 46APPCh. 1 - Prob. 47APPCh. 1 - Prob. 48APPCh. 1 - Evaluate each of the following: (1.4)...Ch. 1 - Prob. 50APPCh. 1 - A bag of gumdrops contains 16 orange gumdrops, 8...Ch. 1 - Prob. 52APPCh. 1 - Write each of the following in scientific...Ch. 1 - Write each of the following in scientific...Ch. 1 - Prob. 55APPCh. 1 - Write each of the following as a standard number:...Ch. 1 - Prob. 57APPCh. 1 - Prob. 58APPCh. 1 - Prob. 59CPCh. 1 - Prob. 60CPCh. 1 - Prob. 61CPCh. 1 - The following problems are related to the topics...Ch. 1 - The following problems are related to the topics...Ch. 1 - Prob. 64CP
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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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