A chemist titrates 20.0 mL of 0.20 M HBrO (see Appendix) with 0.10 M NaOH. What is the pH: a) before any base id added? b) when [HBrO] = [BrO-]? c) at equivalence point? d) when the amount (mol) of OH- added is twice the amount of HBrO present initially?

Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
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Chapter10: The Mole
Section10.5: Formulas Of Hydrates
Problem 78SSC
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A chemist titrates 20.0 mL of 0.20 M HBrO (see Appendix) with 0.10 M NaOH. What is the pH:

a) before any base id added?

b) when [HBrO] = [BrO-]?

c) at equivalence point?

d) when the amount (mol) of OH- added is twice the amount of HBrO present initially?

Iable of Acida with Kand pkavalues
Acid
HA
pKa
Hydronisem ion
lodic
H-O
10
HC O
HSO
SO
CIO
H,PO
HASO
CH-CICOO
HGHO
0.0
HIO
HCO
H,SO
HSO
HCIO
H,PO
HASO
CH-CICOOH
HCH O
HF
HNO
HCOOH
16x 10
5.9 х 10
1.54 x 10
12x 10
1.1x 10
7.52x 10
0.80
Oxalic (1)
Sulfurous (1)
Sulfaric (2)
1.23
1.81
1.92
Chlorous
1.96
Phosphoric (1)
Arsenic (1)
Chloroacetic
Citric (1)
Hydroflooric
Nitrous
2.12
2.30
5,0x 10
1,4x 10
8.4x 10
7.2x 10
4.0 x 10
1.77 x 10
2.85
3,08
3.14
3.39
3.75
NO
Formic
HCOO
1.38 x 10
7.9x 10
6.46 x 10
6,4x 10
HCH H-O
CH H O
HC,HOj
GH;COO
CO
Ny
HC HO/
CHCOO
CH-CH-COO
CHAN
CHO
HCO
Lactic
Ascorbic (1)
3.86
4.10
CH;COOH
HC-O
HN
HCH O
CH;COOH
CHCH-COOH
CHẠNH"
HC,H,O
H-CO,
HSO
HASO
H;5
Benzoic
4.19
Oxalic (2)
Hydrazoic
Citric (2)
4.19
1.9x 10
4,72
1.5 x 10
1.76 x 10
1.34x 10
5.6x 10
4,0x 10
43x 10
1.02 x 10
S/9.3 x 10
1.0x 10 9.1 x 10
6.23 x 10
3.5/3.0x 10
2x10
6.17x 10
5.5x 10
5.6 x 10
1.6x 10
4.8x 10
2x 10
6.0 x 103.0 x 10
24x 10
4.74
Acetic
4.75
Propionic
Pyridiniun ion
Citric (3)
Carboeic (1)
Sulfurous (2)
Arsenic (2)
Hydrosnlfaric
Phosphoric (2)
Hypochlorous
Hypobromeus
Hydrocyanic
Boric (1)
Ammonium jon
Phenol
Carbonic (2)
Hypoiodous
Anenic (3)
Hydrogen peroxide
Ascorbic (2)
Phosphoric (3)
Water
4.87
5.25
5,40
6,37
6,91
7.10/7.03
7/7.04
7.21
7.46/7.53
8.70
9.21
9.23
9.25
HASO
HS
HPO
CIO
H-PO
HCIO
HBrO
HCN
BrO
CN
HBO
NH
CH;OH
HCO
HIO
HAIO,
HBO
NHỊ
CHO
CO
9.80
10.32
10.70
Aso
HO
9.22/11.53
11.62
CHO
PO
11.80
HC HO
HPO
HO
1.6x 10
4.8/2.2x 10
1.0x 10
12.32/12.66
14.0
Transcribed Image Text:Iable of Acida with Kand pkavalues Acid HA pKa Hydronisem ion lodic H-O 10 HC O HSO SO CIO H,PO HASO CH-CICOO HGHO 0.0 HIO HCO H,SO HSO HCIO H,PO HASO CH-CICOOH HCH O HF HNO HCOOH 16x 10 5.9 х 10 1.54 x 10 12x 10 1.1x 10 7.52x 10 0.80 Oxalic (1) Sulfurous (1) Sulfaric (2) 1.23 1.81 1.92 Chlorous 1.96 Phosphoric (1) Arsenic (1) Chloroacetic Citric (1) Hydroflooric Nitrous 2.12 2.30 5,0x 10 1,4x 10 8.4x 10 7.2x 10 4.0 x 10 1.77 x 10 2.85 3,08 3.14 3.39 3.75 NO Formic HCOO 1.38 x 10 7.9x 10 6.46 x 10 6,4x 10 HCH H-O CH H O HC,HOj GH;COO CO Ny HC HO/ CHCOO CH-CH-COO CHAN CHO HCO Lactic Ascorbic (1) 3.86 4.10 CH;COOH HC-O HN HCH O CH;COOH CHCH-COOH CHẠNH" HC,H,O H-CO, HSO HASO H;5 Benzoic 4.19 Oxalic (2) Hydrazoic Citric (2) 4.19 1.9x 10 4,72 1.5 x 10 1.76 x 10 1.34x 10 5.6x 10 4,0x 10 43x 10 1.02 x 10 S/9.3 x 10 1.0x 10 9.1 x 10 6.23 x 10 3.5/3.0x 10 2x10 6.17x 10 5.5x 10 5.6 x 10 1.6x 10 4.8x 10 2x 10 6.0 x 103.0 x 10 24x 10 4.74 Acetic 4.75 Propionic Pyridiniun ion Citric (3) Carboeic (1) Sulfurous (2) Arsenic (2) Hydrosnlfaric Phosphoric (2) Hypochlorous Hypobromeus Hydrocyanic Boric (1) Ammonium jon Phenol Carbonic (2) Hypoiodous Anenic (3) Hydrogen peroxide Ascorbic (2) Phosphoric (3) Water 4.87 5.25 5,40 6,37 6,91 7.10/7.03 7/7.04 7.21 7.46/7.53 8.70 9.21 9.23 9.25 HASO HS HPO CIO H-PO HCIO HBrO HCN BrO CN HBO NH CH;OH HCO HIO HAIO, HBO NHỊ CHO CO 9.80 10.32 10.70 Aso HO 9.22/11.53 11.62 CHO PO 11.80 HC HO HPO HO 1.6x 10 4.8/2.2x 10 1.0x 10 12.32/12.66 14.0
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