Double
displacement
soluality
reaction
Separate the insoluble rink togth
solube precipitate EXCEPT AG SALT
Oxidation # changes
negative
oxidation-
electron
density
around
atom
positive
oxidation
-
electron
denisity
around
atom
D
the
Oxidation
OF
a
free
element
=
0
Na=O
2)
oxidation
#
OF
monatomic
ion
is
the
charge
Na + = 1-
3) in the
formula
for
any
compound
the sum
10 0
Naci =0
4) in a polyatomic ion
the
sum
is
equal to charge
NO3T
I
Na CI
H2O
12-2-2
(
Baso,
Na
CI
1(.2)
(1)69
(4)(-2)
=
0
Ba
s
HCIO3
(1)(+)(r)
(+5)
(-2) = O
(
H
CI
0
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