8.29) For each of the following conjugate pairs, predict whether the acid form or the base form is predominant at the given pH. a) HF/F at pH=9.7 Base form (F) разрка b) CH3NH3*/CH3NH₂ at pH = 7.0 a (CH3 WH3+) c) H₂CO3/HCO3 at pH = 8.5 Solution condition PHLPKa base form (HCO3) р нурка Relative Amount of Acids Base form Cid form PH [A-] рнурка AI>BAT PH= pka [HA] = [A] Acid Name Perchloric acid Hydrochloric acid Chloric acid Phosphoric acid Hydrofluoric acid Acetic acid Carbonic acid Dihydrogen phosphate ion Boric acid Ammonium ion Hydrocyanic acid Bicarbonate ion Methylammonium ion Hydrogen phosphate ion Acid Formula HCIO4 HCI HC103 H3PO4 HF CH3CO₂H H₂CO3 H₂PO4 H₂BO3 NH4+ HCN HCO3 CH3NH3* HPO4²- Ka 1 x 10⁹ M (estimated) 1 x 107 M (estimated) 1 x 10³ M (estimated) 7.5 x 10-³ M 6.6 x 104 M 1.8 x 10-5 M 4.4 x 10-7 M 6.2 x 10-8 M 5.7 x 10-10 M 5.6 x 10-1⁰ M 4.9 x 10-10 M 5.6 x 10-11 M 2.4 x 10-11 M 4.2 x 10-13 M pka pka = -log(ka) -9.0 (estimated) -7.0 (estimated) -3.0 (estimated) 2.12 3.18 4.74 6.36 7.21 9.24 9.25 9.31 10.25 10.62 12.38
8.29) For each of the following conjugate pairs, predict whether the acid form or the base form is predominant at the given pH. a) HF/F at pH=9.7 Base form (F) разрка b) CH3NH3*/CH3NH₂ at pH = 7.0 a (CH3 WH3+) c) H₂CO3/HCO3 at pH = 8.5 Solution condition PHLPKa base form (HCO3) р нурка Relative Amount of Acids Base form Cid form PH [A-] рнурка AI>BAT PH= pka [HA] = [A] Acid Name Perchloric acid Hydrochloric acid Chloric acid Phosphoric acid Hydrofluoric acid Acetic acid Carbonic acid Dihydrogen phosphate ion Boric acid Ammonium ion Hydrocyanic acid Bicarbonate ion Methylammonium ion Hydrogen phosphate ion Acid Formula HCIO4 HCI HC103 H3PO4 HF CH3CO₂H H₂CO3 H₂PO4 H₂BO3 NH4+ HCN HCO3 CH3NH3* HPO4²- Ka 1 x 10⁹ M (estimated) 1 x 107 M (estimated) 1 x 10³ M (estimated) 7.5 x 10-³ M 6.6 x 104 M 1.8 x 10-5 M 4.4 x 10-7 M 6.2 x 10-8 M 5.7 x 10-10 M 5.6 x 10-1⁰ M 4.9 x 10-10 M 5.6 x 10-11 M 2.4 x 10-11 M 4.2 x 10-13 M pka pka = -log(ka) -9.0 (estimated) -7.0 (estimated) -3.0 (estimated) 2.12 3.18 4.74 6.36 7.21 9.24 9.25 9.31 10.25 10.62 12.38
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For each of the following conjugate pairs, predict whether the acid form or the base form is predominant at the given pH. Can you help me because I dont understand how to do step by step?
![8.29) For each of the following conjugate pairs, predict whether the
acid form or the base form is predominant at the given pH.
a) HF/F at pH=9.7 Base form (F)
разрка
b) CH3NH₂+/CH3NH₂ at pH = 7.0
(CH3 WH3+)
c) H₂CO3/HCO3 at pH = 8.5
Solution
condition
рнарка
base form (HCO3)
рнурка
Relative Amount
of Acids Base form
Cid form
PH<pka [HA]> [A-]
рнурка A]>BAT
PH = pka [HA] = [A]
Acid Name
Perchloric acid
Hydrochloric acid
Chloric acid
Phosphoric acid
Hydrofluoric acid
Acetic acid
Carbonic acid
Dihydrogen phosphate ion
Boric acid
Ammonium ion
Hydrocyanic acid
Bicarbonate ion
Methylammonium ion
Hydrogen phosphate ion
Acid
Formula
HCIO4
НСІ
HCIO3
H3PO4
HF
CH3CO₂H
H₂CO3
H₂PO4*
H3BO3
NH4+
HCN
HCO3*
CH3NH3*
HPO4²-
Ka
1 x 10⁹ M (estimated)
1 x 107 M (estimated)
1 x 103 M (estimated)
7.5 x 10-3 M
6.6 x 10-4 M
1.8 x 10-5 M
4.4 x 10-7 M
6.2 x 10-8 M
5.7 x 10-10 M
5.6 x 10-10 M
4.9 x 10-10 M
5.6 x 10-11 M
2.4 x 10-11 M
4.2 x 10-13 M
pka
pka = -log(ka)
-9.0 (estimated)
-7.0 (estimated)
-3.0 (estimated)
2.12
3.18
4.74
6.36
7.21
9.24
9.25
9.31
10.25
10.62
12.38](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F01f8c6b7-4fbc-44a3-985c-7e8df87a7bc6%2F29c1ba61-b3b7-42ca-b2f7-afda60b698d1%2Ffptbvpq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8.29) For each of the following conjugate pairs, predict whether the
acid form or the base form is predominant at the given pH.
a) HF/F at pH=9.7 Base form (F)
разрка
b) CH3NH₂+/CH3NH₂ at pH = 7.0
(CH3 WH3+)
c) H₂CO3/HCO3 at pH = 8.5
Solution
condition
рнарка
base form (HCO3)
рнурка
Relative Amount
of Acids Base form
Cid form
PH<pka [HA]> [A-]
рнурка A]>BAT
PH = pka [HA] = [A]
Acid Name
Perchloric acid
Hydrochloric acid
Chloric acid
Phosphoric acid
Hydrofluoric acid
Acetic acid
Carbonic acid
Dihydrogen phosphate ion
Boric acid
Ammonium ion
Hydrocyanic acid
Bicarbonate ion
Methylammonium ion
Hydrogen phosphate ion
Acid
Formula
HCIO4
НСІ
HCIO3
H3PO4
HF
CH3CO₂H
H₂CO3
H₂PO4*
H3BO3
NH4+
HCN
HCO3*
CH3NH3*
HPO4²-
Ka
1 x 10⁹ M (estimated)
1 x 107 M (estimated)
1 x 103 M (estimated)
7.5 x 10-3 M
6.6 x 10-4 M
1.8 x 10-5 M
4.4 x 10-7 M
6.2 x 10-8 M
5.7 x 10-10 M
5.6 x 10-10 M
4.9 x 10-10 M
5.6 x 10-11 M
2.4 x 10-11 M
4.2 x 10-13 M
pka
pka = -log(ka)
-9.0 (estimated)
-7.0 (estimated)
-3.0 (estimated)
2.12
3.18
4.74
6.36
7.21
9.24
9.25
9.31
10.25
10.62
12.38
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