| Salts |
Salts
A salt is an ionic compound which when
dissolved in water yields a positive ion other than hydrogen ion (H+)
and a negative ion other than hydroxyl ion (OH-).
| No.
|
Salt |
Prepared from
|
|
1
2
3 |
KCL
NH4Cl
FeSO4 |
Acid |
Base |
|
HCl
HCl
H2SO4 |
KOH
NH3
FeO |
Classification of Salts
|
No.
|
Name |
Formation |
Contains |
Examples
|
|
1 |
Normal
Salt |
Formed
by replacement of the hydrogen by a basic radical |
Doesn�t
contain replaceable hydrogen |
NaCl, CuSO4,
AgCl,
CH3COONa
|
|
2 |
Acid
salt |
Formed
by replacement of a part of the hydrogen by a basic radical |
Replaceable hydrogen |
NaHSO3, KHSO3, NaH2PO4,
K2HPO3 |
|
3 |
Basic
salt |
Formed
by incomplete neutralization of a base Pb(OH)Cl, |
Metallic
cation OH- of a base & anion of acid with an acid |
Cu(OH)NO3,
Pb(OH)Cl, Pb(OHNO3) |
|
4 |
Double
salt |
Formed
by mixing saturated solutions of two salts |
Mixture
of two salts combined together |
Mohr�s
salt FeSO4,
(NH4)2SO4
6H2O
Alum
K2SO4.Al2(SO4)3
24H2O
|
|
5 |
Mixed
salt |
No
general method |
Two or
more acidic or basic |
NaKCO3, Ca(OCl)Cl
|
|
6 |
Complex
salt |
Mixing
saturated solution of two salts |
Simple
and complex ions |
K2(HgI4)
Na22HO2
|
Solubility Chart ( in H2O )
1) All salts of Na, K and NH4 are
soluble.
2) All nitrates, nitrites and bicarbonates are soluble.
3) All metallic oxides and sulphides are insoluble.
exception : Na, K Oxides and Sulphates
4) All sulphates are soluble.
exception : Ba, Ca, Pb Sulphates
5) All chlorides are soluble.
exception : Pb, Hg, Ag Chlorides
6) All metallic carbonates, hydroxides and phosphates are insoluble.
exception : Na, K, NH4
Carbonates, hydroxides and phosphates.
|
