HSC CHEMISTRY
MODULE 6: ACID/BASE REACTIONS
Presented by Pete Whiting
© Pete Whiting & Edrolo 2018
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HSC CHEMISTRY – MODULE 6: ACID/BASE REACTIONS
PROPERTIES OF ACIDS AND BASES
Presented by Pete Whiting
© Pete Whiting & Edrolo 2018
2
HSC CHEMISTRY – MODULE 6: ACID/BASE REACTIONS – PROPERTIES OF ACIDS AND BASES
INORGANIC ACIDS AND BASES
Presented by Pete Whiting
Inquiry question: What is an acid and what is a base?
Syllabus dot point:
• investigate the correct IUPAC nomenclature and properties of common inorganic acids and bases
(ACSCH067)
© Pete Whiting & Edrolo 2018
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What’s in this lesson?
Nomenclature
Properties of acids and bases
Common acids and bases
© Pete Whiting & Edrolo 2018
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Mojo Jojo and Him using chemistry for evil…
Sources (L-R): https://www.youtube.com/embed/=bIHtelBU4uA?rel=0,
www.youtube.com/embed/IkXMT7i-NqY?rel=0
© Pete Whiting & Edrolo 2018
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Inorganic compound
(n.) Compounds that
lack a central carbon
atom as a root.
Oxyacid (n.) An acid
containing a
hydrogen, oxygen &
another element.
Nomenclature
Standard IUPAC Rules apply
for inorganic molecules
No
Is it acting as
an acid?
Yes
Is it an oxyacid?
No
s
Ye
*+, = hydrogen
monochloride
Inorganic
nomenclature:
Review the standard
IUPAC rules for
inorganic nomenclature
from the preliminary
course.
Determine the anion
Use ‘Hydro’-anion
name – ’( "(&)’
–4
Named after the
anion with the
suffix ‘−&( "(&)’
*. /13
sulfuric acid
*+, = hydrochloric acid
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– &5
56
Does it end in ‘– "#$’ or ‘−&#$’?
Named after the
anion with the
suffix ‘−789 "(&)’
*012
nitric acid
*. /12
sulfurous acid
© Pete Whiting & Edrolo 2018
*01.
nitrous acid
*- = hydroiodic acid
Some exceptions
exist – *. / is not
named as an acid.
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The PH Scale
Property
Acid
Base/Alkali
Ionisation
Ionises to increase the
[H+]
Ionises to increase the
[OH-]
pH
pH < 7
pH > 7
Taste
Sour
Bitter
Electrolytic nature
Dissolve in H2O to create
conductive solutions –
electrolytic.
Dissolve in H2O to create
conductive solutions –
electrolytic.
Neutralisation
Can be neutralised by
bases.
Can be neutralised by
acids.
Feel
Corrosive, burns.
Corrosive and give a
soapy/slippery feel.
Litmus
Turn blue litmus red
Turn red litmus blue.
Alkaline
Acid (n.)
Donates a H+,
capable of
neutralising a base
and having a pH less
than 7.
Properties of acids and bases
Neutral
Acidic
Alkaline/basic
(adj.)
Capable of
neutralising an acid
and having a pH
greater than 7.
pH (n.)
A scale that measures the
potential of hydrogen – the
activity of H+ ions in solution.
© Pete Whiting & Edrolo 2018
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Alkaline/basic
(adj.)
Capable of
neutralising an acid
and having a pH
greater than 7.
Acid (n.)
Donates a H+,
capable of
neutralising a base
and having a pH less
than 7.
Common acids and bases
Household Iye
(NaOH solution)
Household bleach
(NaCIO solution)
Milk of magnesia
(Mg(OH)2)
Household ammonia
(NH3 solution)
Baking soda
(NaHCO3)
Blood
Seawater
Milk
Freshly distilled
water
Egg yolks
Pure rain (H2O in
equilibrium with
atmospheric CO2)
Coffee
Beer
Lemon juice
Orange juice
Vinegar
Carbonated beverages
Battery acid
Gastric fluid
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Multiple choice activity
Name the acid H3PO4.
A. Trihydrogen phosphate
B. Hydrogen phosphate
C. Phosphorous acid
D. Phosphoric acid
E. I don’t know.
© Pete Whiting & Edrolo 2018
(Written by the author)
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Multiple choice – Response
Name the acid H3PO4.
A. Trihydrogen phosphate
B. Hydrogen phosphate
C. Phosphorous acid
D. Phosphoric acid
E. I don’t know.
© Pete Whiting & Edrolo 2018
(Written by the author)
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Multiple choice activity
A solution was shown to have a sour taste in diluted forms, reacted to turn litmus paper red.
Determine the pH of the solution described.
A. pH < 7
B. pH = 7
C. pH > 7
D. I don’t know.
© Pete Whiting & Edrolo 2018
(Written by the author)
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Multiple choice – Response
A solution was shown to have a sour taste in diluted forms, reacted to turn litmus paper red.
Determine the pH of the solution described.
A. pH < 7
B. pH = 7
C. pH > 7
D. I don’t know.
© Pete Whiting & Edrolo 2018
(Written by the author)
12
Multiple choice activity
The pH of cleaning products in the home tend to be characterised as:
A. pH < 7.
B. pH = 7.
C. pH > 7.
D. I don’t know.
© Pete Whiting & Edrolo 2018
(Written by the author)
13
Multiple choice – Response
The pH of cleaning products in the home tend to be characterised as:
A. pH < 7.
B. pH = 7.
C. pH > 7.
D. I don’t know.
© Pete Whiting & Edrolo 2018
(Written by the author)
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© Pete Whiting & Edrolo 2018
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