General, Organic, and Biological Chemistry - 4th edition
4th Edition
ISBN: 9781259883989
Author: by Janice Smith
Publisher: McGraw-Hill Education
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Question
Chapter 24, Problem 40P
Interpretation Introduction
Interpretation:
The purpose for the conversion of pyruvate to lactate under anaerobic conditions should be determined.
Concept Introduction:
Aerobic respiration occurs in two steps:
- Glycolysis
- Citric acid cycle
Glycolysis is the first step that forms pyruvate. In the presence of oxygen means aerobic respiration, this pyruvate enters the Krebs cycle and extracts energy in the form of electrons transfer. Electrons are transferred from the pyruvate to the receptors like
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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•
Chapter 24 Solutions
General, Organic, and Biological Chemistry - 4th edition
Ch. 24.2 - Analyze the following reaction by considering the...Ch. 24.2 - Prob. 24.2PPCh. 24.3 - Prob. 24.1PCh. 24.3 - Prob. 24.2PCh. 24.3 - Prob. 24.3PCh. 24.3 - Prob. 24.4PCh. 24.3 - Prob. 24.5PCh. 24.3 - Prob. 24.6PCh. 24.4 - Prob. 24.7PCh. 24.4 - Prob. 24.8P
Ch. 24.4 - Prob. 24.9PCh. 24.5 - Prob. 24.10PCh. 24.5 - Prob. 24.11PCh. 24.5 - Prob. 24.12PCh. 24.6 - Prob. 24.13PCh. 24.7 - Prob. 24.14PCh. 24.7 - Prob. 24.3PPCh. 24.7 - Prob. 24.15PCh. 24.7 - Prob. 24.16PCh. 24.7 - Use the number of molecules of ATP formed from the...Ch. 24.7 - Prob. 24.18PCh. 24.8 - Prob. 24.19PCh. 24.8 - Prob. 24.20PCh. 24.8 - Prob. 24.21PCh. 24.9 - Prob. 24.4PPCh. 24.9 - What products are formed when each amino acid is...Ch. 24.9 - Prob. 24.22PCh. 24 - Analyze each reaction by considering the...Ch. 24 - Analyze each reaction by considering the...Ch. 24 - Prob. 25PCh. 24 - Prob. 26PCh. 24 - Prob. 27PCh. 24 - Prob. 28PCh. 24 - Prob. 29PCh. 24 - Prob. 30PCh. 24 - Prob. 31PCh. 24 - Prob. 32PCh. 24 - Glucose is completely metabolized to six molecules...Ch. 24 - Why is glycolysis described as an anaerobic...Ch. 24 - Write the overall equation with key coenzymes for...Ch. 24 - Prob. 36PCh. 24 - Prob. 37PCh. 24 - Prob. 38PCh. 24 - Consider the aerobic and anaerobic avenues of...Ch. 24 - Prob. 40PCh. 24 - Prob. 41PCh. 24 - Prob. 42PCh. 24 - Prob. 43PCh. 24 - Prob. 44PCh. 24 - Prob. 45PCh. 24 - Prob. 46PCh. 24 - Prob. 47PCh. 24 - Prob. 48PCh. 24 - Prob. 49PCh. 24 - Prob. 50PCh. 24 - Prob. 51PCh. 24 - Prob. 52PCh. 24 - Prob. 53PCh. 24 - Prob. 54PCh. 24 - Prob. 55PCh. 24 - Prob. 56PCh. 24 - Prob. 57PCh. 24 - Prob. 58PCh. 24 - Prob. 59PCh. 24 - How much ATP is generated by the complete...Ch. 24 - Prob. 61PCh. 24 - Fill in the boxes with the number of moles of each...Ch. 24 - Prob. 63PCh. 24 - Prob. 64PCh. 24 - Prob. 65PCh. 24 - Prob. 66PCh. 24 - Prob. 67PCh. 24 - Prob. 68PCh. 24 - Prob. 69PCh. 24 - Prob. 70PCh. 24 - What is the difference between ketogenic and...Ch. 24 - Prob. 72PCh. 24 - Prob. 73PCh. 24 - Draw the structure of the keto acid formed by the...Ch. 24 - Draw the products formed in each transamination...Ch. 24 - Prob. 76PCh. 24 - Prob. 77PCh. 24 - Prob. 78PCh. 24 - Prob. 79PCh. 24 - Prob. 80PCh. 24 - What metabolic intermediate is formed from the...Ch. 24 - What metabolic intermediate is formed from the...Ch. 24 - Prob. 83PCh. 24 - Prob. 84PCh. 24 - Prob. 85PCh. 24 - Prob. 86PCh. 24 - Prob. 87PCh. 24 - What is the cause of the pain and cramping in a...Ch. 24 - Prob. 89PCh. 24 - Prob. 90PCh. 24 - Prob. 91PCh. 24 - Prob. 92PCh. 24 - Prob. 93PCh. 24 - Prob. 94PCh. 24 - What type of enzyme would catalyze the conversion...Ch. 24 - Prob. 96PCh. 24 - Prob. 97CPCh. 24 - Prob. 98CPCh. 24 - Prob. 99CPCh. 24 - Prob. 100CP
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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 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_forwardion. 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_forward
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