Using Acid Strength Tables Chemistry Worksheets
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1
2Worksheet 4.3
Using Acid Strength Tables
Acid-base reactions can be considered to be a competition for protons. A stronger acid
can cause a weaker acid to act like a base. Label the acids and bases. Complete the
reaction. State if the reactants or products are favoured.
-
2-
2-
-
1.
HSO
+
HPO
⇄
SO
+
H
PO
4
4
4
2
4
Acid
Base
Base
Acid
-
-
Products are favoured as HSO
is a stronger acid than H
PO
4
2
4
+
-
⇄
2.
HCN
+
H
O
H
O
+
CN
2
3
Acid
Base
Acid
Base
+
Reactants are favoured as H
O
is a stronger acid than HCN.
3
-
-
⇄
3.
HCO
+
H
S
H
CO
+
HS
3
2
2
3
Base
Acid
Acid
Base
Reactants are favoured as H
CO
is a stronger acid than H
S
2
3
2
2-
+
-
⇄
4.
HPO
+
NH
H
PO
+
NH
4
4
2
4
3
Base
Acid
Acid
Base
-
+
Reactants are favoured as H
PO
is a stronger acid than NH
2
4
4
+
-
⇄
5.
NH
+
H
O
NH
+
OH
3
2
4
Base
Acid
Acid
Base
-
Reactants are favoured as OH
is a stronger base than NH
3
1-
2-
+
⇄
6.
H
PO
+
NH
HPO
+
NH
2
4
3
4
4
Acid
Base
Base
Acid
2-
Products are favoured as NH
is a stronger base than HPO
3
4
-
-
⇄
7.
HCO
+
HF
H
CO
+
F
3
2
3
Base
Acid
Acid
Base
Products are favoured as HF is a stronger acid than H
CO
2
3
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