Aqueous Ions And Reactions Worksheet With Answers Page 8
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2
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9
10+
H
O
and H
O are conjugate acid-base pair
3
2
Monoprotic: means donate one proton (ex. HCl and HC
H
O
)
2
3
2
Polyprotic Acids: can donate more than one proton
Examples:
H
SO
hydrogen sulfate is diprotic (sulfuric acid)
2
4
H
PO
hydrogen phosphate is triprotic (phosphoric acid)
3
4
-
O H
H
SO
+ H
O
+ HSO
2
4
2
3
+
4
-
+
2-
HSO
+ H
O <----> H
O
+ SO
4
2
3
4
Acid 1 Base 2
Acid 2 Base1
Amphiprotic: ion or molecule that can accept or donate a proton
-
In the example above HSO
is amphiprotic
4
Types of Reactions
Chemical reaction – atoms are rearranged
(may or may not be obvious by simple observation)
Traditional Scheme:
Combination
2Na (s) + Cl
(g) 2NaCl (s)
2
Decomposition
2KClO
(s) (heat and MnO
catalyst) 2KCl (s) + 3O
(g)
3
2
2
Displacement
Zn (s) + CuCl
(aq) Cu + ZnCl
(aq)
2
2
Zn (s) + 2HCl (aq) H
(aq) + ZnCl
(aq)
2
2
Metathesis
AgNO
(aq) + NaCl (aq) NaNO
(aq) + AgCl (s)
3
3
(Double Displacement)
Combustion
4 Fe (s) + 3O
(g) 2FeO
(s)
2
3
C (s) + O
(g) CO
(g)
2
2
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