Solubility Rules Made Easy
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1SolubilityRules Made Easy
Having trouble memorizing your solubility rules? This is the hand out for you. These
are two different ways that will help and make your life a little easier.
-
The first is an acronym: “CASH N’ Gia.” All these things are soluble unless
they are found with certain elements.
-
The second is a list of bullet points if you do not like the acronym. The best
way to remember these is pure memorization. There is no short cut!
All Soluble
Except With
C
hlorates
A
cetates
C
B
S
H
A
P
(CBS HAPpy)
S
ulfates
a
a
r
g
g
b
H
H
A
P
(HAPpy)
alogens
g
g
b
Simple Solubility Rules:
N’
itrates
-
-Nitrate (NO
) salts are soluble.
3
+
-Alkali (group 1A) salts and NH
are
G
4
roup (IA)
soluble.
-
-
-
-Cl
, Br
, and I
salts are soluble (NOT
i
+
2+
2+
Ag
, Pb
, Hg
)
2
-Sulfate salts are soluble (NOT BaSO
,
a
4
PbSO
, HgSO
, CaSO
)
4
4
4
−
-OH
salts are only slightly soluble
(NaOH, KOH are soluble,
Ba(OH)
,Ca(OH)
are marginally
2
2
soluble)
2−
2−
2−
3−
-S
, CO
, CrO
, PO
salts are
3
4
4
insoluble.
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