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Chemistry
Topic 8
8.2 - Properties of Acids and Bases
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Euan Fraser
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Cards (4)
Acid Reaction with Metals
Acids react with
most
metals to produce
hydrogen
gas and a
salt
, following the general formula:
A
c
i
d
+
Acid +
A
c
i
d
+
M
e
t
a
l
→
S
a
l
t
+
Metal \rightarrow Salt +
M
e
t
a
l
→
S
a
lt
+
H
2
(
g
)
H_2(g)
H
2
(
g
)
Acid Reaction with Base
Acids and bases can
neutralise
each other to form
water
and a
salt
, as in the reaction:
H
C
l
(
a
q
)
+
HCl(aq) +
H
Cl
(
a
q
)
+
N
a
O
H
(
a
q
)
→
N
a
C
l
(
a
q
)
+
NaOH(aq) \rightarrow NaCl(aq) +
N
a
O
H
(
a
q
)
→
N
a
Cl
(
a
q
)
+
H
2
O
(
l
)
H_2O(l)
H
2
O
(
l
)
Acid Reaction with Carbonates
Acids react with carbonates and bicarbonates to produce
carbon dioxide
gas,
water
, and a
salt
, e.g.
2
H
C
l
(
a
q
)
+
2HCl(aq) +
2
H
Cl
(
a
q
)
+
N
a
2
C
O
3
(
a
q
)
→
2
N
a
C
l
(
a
q
)
+
Na_2CO_3(aq) \rightarrow 2NaCl(aq) +
N
a
2
C
O
3
(
a
q
)
→
2
N
a
Cl
(
a
q
)
+
H
2
O
(
l
)
+
H_2O(l) +
H
2
O
(
l
)
+
C
O
2
(
g
)
CO_2(g)
C
O
2
(
g
)
Acids and Bases Reaction with Indicators
Acids turn
blue
litmus paper
red
, while bases turn
red
litmus paper
blue.
