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Summary Precipitation Reactions
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The document consists of in-depth, step-by-step rules on how to solve precipitation reactions. Also gives an overview of nonsoluble and soluble compounds. It also has helpful examples that are already solved. The document also goes over the formula equation, ionic equation, and net ionic equation. ...

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  • August 31, 2023
  • 9
  • 2021/2022
  • Summary

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Precipitation Reactions
ex .
2kt caq) + Pb ( NO 3) zcaq] →
Pbl ( s ) +2 KNO } caq)

•
When ionic compounds forms a solid , the compound must have zero net
charge
•
most ionic compound only one cation and anion

•
a series of empirical ( ie based
. on experimental evidence ) rules

can be used to predict precipitation products .




Simple Rules For The Solubility Of Salts In Water
I. Most nitrate CNO 5) salts are soluble 3. Most chloride bromide and -
iodide salts are soluble .




Exception .
are salts containing Ag+,PbtgÉ
-2 . Most salts containing the alkali metal I. Most sulfates are soluble
Exception P-bsoy.it#sog ,


¥?
and the
,
ammonium ion Bady and CASI



£ Most hydroxides are insoluble .
The only soluble one are NaOHSKOH_
compounds BACOH )z ,
Ca ( OH ,) and Sr ( OH)z are
marginally
soluble


Rfid) ( coz
2-
) chromate ( Cr 04 2)
-




6. Most ,
carbonate , and

phosphate ( Poy 3) salts are insoluble except those containing
-




the cations in rule 2 ( alkali metal)



SOLUBLE summary NON SOLUBLE
NO }
-




nitrate
"
Cl S 3r Agt Pbi Hg
, ,
Li Na ,K , Cs Rb
, , , WHY
Basoy Caso,
,




504-2 Pb 504
H angrily Backed
, Hg 2504
carpebble's
,




Bal OH)z (alot -2758101-02 NaOH KOH
,
, , OH 'S
on ! Sir back car


only if cation sit05 ? Croy ? Poy - -3

, solutions shown below
Identify any precipitate that forms when the

mixed
are
together .




a) Ca ( czHz0z)z ( aq) +
Rbz 504 Cag;)

" -




Ca Cz -1-1302 '
→
casoycs Rbczttzoz
-1*0504-2
or
Rb
( sulfates soluble)




b) Fe 504 caq)
+
Kclcaq)

504-2
+2
Fe Feclzcaq) KzS04Caq)
# no precipitate
I '
Kt
-




a


c) Aqueous potassium phosphate +
aqueous beryllium sulfate
Kz( PO 4) caq) Belson) (aq)


Kz( SO 4) (aq) and Bez (Pou)z ( s)


d) Nazsoycaq) + PbCNO3)z

Na(N0z)caq) Pbsoy ( s)

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