For the given titration curve of a weak monoprotic acid with a strong base, The pH and the added volume of the base at the equivalence point is to be determined. The volume of the added base is to be determined at which the volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and K a of the weak acid. The volume of added base at which p H = p K a is to be determined. The volume of the added base is to be determined at which the volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and K b of the conjugate base. The volume of added base is to be determined beyond which the volume of added base is the pH calculated by concentrating on the amount of excess added strong base.
For the given titration curve of a weak monoprotic acid with a strong base, The pH and the added volume of the base at the equivalence point is to be determined. The volume of the added base is to be determined at which the volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and K a of the weak acid. The volume of added base at which p H = p K a is to be determined. The volume of the added base is to be determined at which the volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and K b of the conjugate base. The volume of added base is to be determined beyond which the volume of added base is the pH calculated by concentrating on the amount of excess added strong base.
Definition Definition Method of quantitative analysis for determining the concentration of an acid or base by exactly neutralizing it with a standard solution of base or acid having known concentration.
Chapter 17, Problem 65E
Interpretation Introduction
Interpretation: For the given titration curve of a weak monoprotic acid with a strong base,
The pH and the added volume of the base at the equivalence point is to be determined.
The volume of the added base is to be determined at which the volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and Ka of the weak acid.
The volume of added base at which pH=pKa is to be determined.
The volume of the added base is to be determined at which the volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and Kb of the conjugate base.
The volume of added base is to be determined beyond which the volume of added base is the pH calculated by concentrating on the amount of excess added strong base.
5.
Use the MS data to answer the questions on the next page.
14.0
1.4
15.0
8.1
100-
MS-IW-5644
26.0
2.8
27.0
6.7
28.0
1.8
29.0
80
4.4
38.0
1.0
39.0
1.5
41.0
1.2
42.0
11.2
43.0
100.0
44.0
4.3
79.0
1.9
80.0
2.6
Relative Intensity
40
81.0
1.9
82.0
2.5
93.0
8.7
20-
95.0
8.2
121.0
2.0
123.0
2.0
136.0
11.8
0
138.0
11.5
20
40
8.
60
a.
Br
- 0
80
100
120
140
160
180
200
220
m/z
Identify the m/z of the base peak and molecular ion.
2
b.
Draw structures for each of the following fragments (include electrons and charges): 43.0, 93.0,
95.0, 136.0, and 138.0 m/z.
C.
Draw a reasonable a-fragmentation mechanism for the fragmentation of the molecular ion to
fragment 43.0 m/z. Be sure to include all electrons and formal charges.
6. Using the values provided in Appendix E of your lab manual, calculate the monoisotopic mass for the pyridinium
ion (CsH6N) and show your work.
None
Stereochemistry: Three possible answers- diastereomers, enantiomers
OH
CH₂OH
I
-c=0
21108 1101
41745 HOR
CH₂OH
IL
Но
CH₂OH
TIL
a. Compounds I and III have this relationship with each other: enantiomers
b. Compounds II and IV have this relationship with each other:
c. Compounds I and II have this relationship with each other:
d. *Draw one structure that is a stereoisomer of II, but neither a
diastereomer nor an enantiomer. (more than one correct answer)
Chapter 17 Solutions
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