2. For each of the following salts, determine the pH of a 2.50M solution of the salt. You will need the Ka and Kb tables to complete this problem. a. NaBro b. CH3NH3CI c. NaCIO2 d. C6H5OK
2. For each of the following salts, determine the pH of a 2.50M solution of the salt. You will need the Ka and Kb tables to complete this problem. a. NaBro b. CH3NH3CI c. NaCIO2 d. C6H5OK
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
![2. For each of the following salts, determine the pH
of a 2.50M solution of the salt. You will need the Ka
and Kb tables to complete this problem.
a. NaBro b. CH3NH3CI c. NaClO2 d. C6H5OK
e. CSNO3 f. C6H5NH3B
Martin S. Silberberg. Chemiatry: The Molecular Nature of Matter and Change, 2nd Edition. Copyright The McGraw-Hill Companies, Inc. All righto resorvod.
Kb Values for Molecular Bases
Table 18.6 KbValues for Some Molecular (Amine) Bases at 25°C
Name (Formula)
Lewis Structure*
HHH H H
Diethylamine [(CH,CH,),NH]
H-C
-C-C-H
8.6x104
H H
H H H
Dimethylamine [(CH,),NH]
H-C-N-C-H
5.9x10
H.
H H
H-C-C-H
Triethylamine [(CH,CH,),N]
5.2x104
H-C
H H
H-c-c-H
Methylamine (CH, NH,)
H-C-N-H
4.4x104
Ethanolamine (HOCH,CH,NH,)
H-ö-c-C-N-H
3.2x10-5
Ammonia (NH,)
H-N-H
1.76x105
Pyridine (C,H5N)
1.7x10-9
Aniline (C,H,NH2)
-N-H
4.0x10-10
* Blue type indicates the basic nitrogen and its lone pair.
Martin S. Sberberg. Chamietry: The Molacular Nature of Matter and Change, 2 Edbon. Copyrighte The MeGraw-HI Companies, Ire. Al righte recervad.
Ka Values
for Some
Monoprotic
Acids
Table 18.2 Ka Values for Some Monoprotic Acids at 25°C
Name (Formula)
lodic acid (HIO3)
Lewis Structure*
Ka
H-ö-i-ö
1.6x10-1
Chlorous acid (HCIO,)
Nitrous acid (HNO,)
Hydrofluoric acid (HF)
H-ö-N-Ö
H-:
1.12x10-2
7.1x104
6.8x10
Formic acid (HCOOH)
H-C-ö-H
1.8x10
Benzoic acid (C, H,COOH) O--ö-n
6.3x10-5
Acetic acid (CH,COOH)
H-c-C-0-H
1.8x105
H
HH 1O
Propanoic acid
(CH,CH,COOH)
H-c-c-c-ö-H 1.3x10¬5
H H
Hypochlorous acid (HCIO) H-ö-i:
Hypobromous acid (HBRO) H-ö-re
Hydrocyanic acid (HCN)
2.9x108
2.3x109
6.2x10-10
H-C=N
Phenol (C,H;OH)
1.0x10-10
2.3x10-11
Hypoiodous acid (HIO)
H-0-
"Red type indicates the ionizable proton; structures have zero formal charge.
H2SO4 Ka1 = Sstrong Ka2 = 1.2 x 10-2
H2C2O4 Ka1 = 6.0 x 102
Ka2 = 6.1 x 10-5
H2SO3
Ka1 = 1.6 x 102
Ka2 = 6.4 x 10-8
H3PO4
Ka1 = 7.5 x 10-3
Ka2 = 6.2 x 10-8 Ka3 = 4.2 x 10-13
H3C6HSO, Ka1=7.4 x 10-4 Ka2= 1.7 x 105
Ka3 = 4.0 x10-7
Citric acid
H2C6H6O6 Ka1= 8.0 x 10-5 Ka2 = 1.6 x 10-12
Ascorbic acid
ACID STRENGTH
BASE STRENGTH](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F57638993-6d33-4396-984b-2e3f32f46fd1%2F6fd88845-a28f-4401-826c-50380a850683%2Fdpkp1p7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. For each of the following salts, determine the pH
of a 2.50M solution of the salt. You will need the Ka
and Kb tables to complete this problem.
a. NaBro b. CH3NH3CI c. NaClO2 d. C6H5OK
e. CSNO3 f. C6H5NH3B
Martin S. Silberberg. Chemiatry: The Molecular Nature of Matter and Change, 2nd Edition. Copyright The McGraw-Hill Companies, Inc. All righto resorvod.
Kb Values for Molecular Bases
Table 18.6 KbValues for Some Molecular (Amine) Bases at 25°C
Name (Formula)
Lewis Structure*
HHH H H
Diethylamine [(CH,CH,),NH]
H-C
-C-C-H
8.6x104
H H
H H H
Dimethylamine [(CH,),NH]
H-C-N-C-H
5.9x10
H.
H H
H-C-C-H
Triethylamine [(CH,CH,),N]
5.2x104
H-C
H H
H-c-c-H
Methylamine (CH, NH,)
H-C-N-H
4.4x104
Ethanolamine (HOCH,CH,NH,)
H-ö-c-C-N-H
3.2x10-5
Ammonia (NH,)
H-N-H
1.76x105
Pyridine (C,H5N)
1.7x10-9
Aniline (C,H,NH2)
-N-H
4.0x10-10
* Blue type indicates the basic nitrogen and its lone pair.
Martin S. Sberberg. Chamietry: The Molacular Nature of Matter and Change, 2 Edbon. Copyrighte The MeGraw-HI Companies, Ire. Al righte recervad.
Ka Values
for Some
Monoprotic
Acids
Table 18.2 Ka Values for Some Monoprotic Acids at 25°C
Name (Formula)
lodic acid (HIO3)
Lewis Structure*
Ka
H-ö-i-ö
1.6x10-1
Chlorous acid (HCIO,)
Nitrous acid (HNO,)
Hydrofluoric acid (HF)
H-ö-N-Ö
H-:
1.12x10-2
7.1x104
6.8x10
Formic acid (HCOOH)
H-C-ö-H
1.8x10
Benzoic acid (C, H,COOH) O--ö-n
6.3x10-5
Acetic acid (CH,COOH)
H-c-C-0-H
1.8x105
H
HH 1O
Propanoic acid
(CH,CH,COOH)
H-c-c-c-ö-H 1.3x10¬5
H H
Hypochlorous acid (HCIO) H-ö-i:
Hypobromous acid (HBRO) H-ö-re
Hydrocyanic acid (HCN)
2.9x108
2.3x109
6.2x10-10
H-C=N
Phenol (C,H;OH)
1.0x10-10
2.3x10-11
Hypoiodous acid (HIO)
H-0-
"Red type indicates the ionizable proton; structures have zero formal charge.
H2SO4 Ka1 = Sstrong Ka2 = 1.2 x 10-2
H2C2O4 Ka1 = 6.0 x 102
Ka2 = 6.1 x 10-5
H2SO3
Ka1 = 1.6 x 102
Ka2 = 6.4 x 10-8
H3PO4
Ka1 = 7.5 x 10-3
Ka2 = 6.2 x 10-8 Ka3 = 4.2 x 10-13
H3C6HSO, Ka1=7.4 x 10-4 Ka2= 1.7 x 105
Ka3 = 4.0 x10-7
Citric acid
H2C6H6O6 Ka1= 8.0 x 10-5 Ka2 = 1.6 x 10-12
Ascorbic acid
ACID STRENGTH
BASE STRENGTH
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