PRECIPITATION REACTIONS
i
A precipitate is an insoluble solid formed by a reaction in solution.
insolvable solid
Alags Blag) >
Cag D, > ->
eX .
+
+
Precipitation reaction occur when pairs of oppositely charged ions attract each
other so strongly that they form an insoluble ionic solid.
see attached picture to know the summarizes .
Solubility Guidelines for Common Ionic Compounds in H₂O
• Summarizes the experimental observations regarding solubility.
any
imic compond
contain this S
All solvable
soluble Nat k NHyt
+
is
>
-
NaCl (salt) *
NO5 ClOp
m
group 2 A
KNOs etc .
*
*
most insolvables
remember ↳always
able
>
exception
-
!
the MgS
cas
!
~
remember !
BalOH) !
~
Solubility: the amount of a substance that can be dissolvedwater
in a given
at
quantity
later
solubility
°
in
of a solvent at a given temperature. ex ·
C 20 ,
0043g/lrog
0
oxygen
:
water
.
=>
Note: Any substance with a solubility less than 0.01 mol/L will be considered
re s e
insoluble.
, METATHESIS REACTIONS fi
...
AX + BY → AY + BX replace each cation and Anior
,
ex: Na₂CrO₄(aq) + 2 AgNO₃(aq) → 2 NaNO₃(aq) + Ag₂CrO₄(s)
Net Ionic Equations
↳
precipitation
Al +
Y
+
-
1. Break up (aq) species into ions AX >
-
A + x BY > B +
2. Keep any (s) or (ppt) as they are
BX
2S 1/
Na⁺(aq) + CrO₄²⁻(aq) + 2 Ag⁺(aq) + 2 NO₃ ⁻(aq) → 2 Na⁺(aq) +/
2 NO₃⁻(aq)
+ Ag₂CrO₄(s)
(complete ionic equation)
3. Cancel out all spectator ions
2 Ag⁺(aq) + CrO₄²⁻(aq) → Ag₂CrO₄(s)
(net ionic equation)
+ B
Y gro
+
A+ x
-
Ye
At
A Y
priciptation,3
>
- insolvable
i
A precipitate is an insoluble solid formed by a reaction in solution.
insolvable solid
Alags Blag) >
Cag D, > ->
eX .
+
+
Precipitation reaction occur when pairs of oppositely charged ions attract each
other so strongly that they form an insoluble ionic solid.
see attached picture to know the summarizes .
Solubility Guidelines for Common Ionic Compounds in H₂O
• Summarizes the experimental observations regarding solubility.
any
imic compond
contain this S
All solvable
soluble Nat k NHyt
+
is
>
-
NaCl (salt) *
NO5 ClOp
m
group 2 A
KNOs etc .
*
*
most insolvables
remember ↳always
able
>
exception
-
!
the MgS
cas
!
~
remember !
BalOH) !
~
Solubility: the amount of a substance that can be dissolvedwater
in a given
at
quantity
later
solubility
°
in
of a solvent at a given temperature. ex ·
C 20 ,
0043g/lrog
0
oxygen
:
water
.
=>
Note: Any substance with a solubility less than 0.01 mol/L will be considered
re s e
insoluble.
, METATHESIS REACTIONS fi
...
AX + BY → AY + BX replace each cation and Anior
,
ex: Na₂CrO₄(aq) + 2 AgNO₃(aq) → 2 NaNO₃(aq) + Ag₂CrO₄(s)
Net Ionic Equations
↳
precipitation
Al +
Y
+
-
1. Break up (aq) species into ions AX >
-
A + x BY > B +
2. Keep any (s) or (ppt) as they are
BX
2S 1/
Na⁺(aq) + CrO₄²⁻(aq) + 2 Ag⁺(aq) + 2 NO₃ ⁻(aq) → 2 Na⁺(aq) +/
2 NO₃⁻(aq)
+ Ag₂CrO₄(s)
(complete ionic equation)
3. Cancel out all spectator ions
2 Ag⁺(aq) + CrO₄²⁻(aq) → Ag₂CrO₄(s)
(net ionic equation)
+ B
Y gro
+
A+ x
-
Ye
At
A Y
priciptation,3
>
- insolvable
