Acids

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Acids Lesson 7 Application of Hydrolysis
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Application of Hydrolysis Tums CaCO3 Basic
Salt neutralizes stomach acid CaCO3 ?
Ca2 CO32- CO32- HCl ? HCO3- Cl- HCO3
- HCl ? H2CO3 Cl-
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Salt and Vinegar Potato Chips CH3COOH NaCH3COO(
s) C3H5O3COOH(s) H3C6H5O7(s)
Acetic acid
Sodium acetate
Malic acid
Citric acid
NaCH3COO ? Na CH3COO-
CH3COO- H2O ? CH3COOH OH-
Malic and Citric acid lowers the OH-, shifting
right making more vinegar.
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Classify each formula and write an
equation. strong acid weak acid strong
base weak base acid anhydride basic anhydride.
HClO3 ? H ClO4-
Strong acid
HClO4
SO2 H2O ? H2SO3
Acid Anhydride
SO2
H2SO3 ? H HSO3-
Ca(OH)2 ? Ca2 2OH-
Strong Base
Ca(OH)2
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Classify each formula and write an
equation. strong acid weak acid strong
base weak base acid anhydride basic anhydride.
H2CO3
H2CO3 ? H HCO3-
Weak Acid
BaO H2O ? Ba(OH)2
BaO
Basic Anhydride
Ba(OH)2 ? Ba2 2OH-
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Classify each formula and write an
equation. strong acid weak acid strong
base weak base acid anhydride basic anhydride.
NaCN
NaCN ? Na CN-
Basic Salt
CN- H2O ? HCN OH-
KCl ? K Cl-
Neutral Salt
KCl
CrCl3 ? Cr3 3Cl-
Acid Salt
CrCl3
Cr(H20)63 ? H Cr(H20)5(OH)2
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The pH Scale Water ionizes to a small
degree. H2O(l) ? H OH-   2H2O(l) ? H3O
OH-   Kw HOH- 1.0 x 10-14 _at_ 250
C H and OH- are inversely related!
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1. Calculate the H and OH- in 1.0 M HCl.
HCl ? H Cl- 1.0 M 1.0 M 1.0
M HOH- 1.0 x 10-14 1.0OH- 1.0 x
10-14 OH- 1.0 x 10-14 M Note that in
acid solution the H is large and the OH- is
small.
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2. Calculate the H and OH- in 1.0 M
Ba(OH)2.   Ba(OH)2 ? Ba2 2OH- 1.0
M 1.0 M 2.0 M HOH- 1.0 x
10-14 H2.0 1.0 x 10-14 H 5.0 x
10-15 M In a basic solution the OH- is very
large and the H is very small!
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3. Calculate the H and OH- in
H2O. H2O ? H OH- x x H
OH- 1.0 x 10-14 x2 1.0 x
10-14 OH- H 1.0 x 10-7 M Note
that in pure water that the H and the OH-
are equal!
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4. The pH scale has three important end
points.   pH     0 Strong Acid 1.0 M
HCl   7 Neutral H2O or NaCl 14 Strong
Base 1.0 M NaOH
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5. Match each letter with a formula. All are 1
M.   NH3   HCl   KOH   HF   H2O

weak base D
strong acid A
strong base E
weak acid B
neutral C