CHM
1025C Module Five Sample Name:__ __________
Part
H1 Double Replacement Reaction:
Neutralization/Gas Forming
Reactions 10 points
Compounds containing the following ions are
generally soluble in water:
1. Alkali metal ions and ammonium ions, Li+ , Na+ , K+ , NH4+
2. Acetate ion, C2H3O2-
3. Nitrate ion, NO3-
4. Halide ions (X), Cl-
, Br- , I- (AgX, Hg2X2 , and PbX2 are insoluble exceptions)
5. Sulfate ion, SO4 2-
(SrSO4, BaSO4
, and PbSO4 are
insoluble exceptions)
Compounds containing the following ions are
generally insoluble in water:
6. Carbonate
ion,CO32- (see rule 1
exceptions which are soluble)
7. Chromate
ion CrO42- (see rule 1 exceptions which are soluble)
8. Phosphate ion PO43- (see
rule 1 exceptions which are soluble)
9. Sulfide
ion, S2- (CaS, SrS, BaS, and rule 1 exceptions
are soluble in water)
10. Hydroxide ion, OH- [ Ca(OH)2 , Sr(OH)2 , Ba(OH)2
, and rule 1 exceptions are soluble)
Given
the following Solubility Rules for Ionic Compounds:
Complete and balance the following precipitation
reactions using the above solubility table
(write no reaction if both
products are soluble or a covalent compounds is not formed)
1. Mg(OH)2 (s)
+ H2SO4 (aq) ------>
2. H3PO4
(aq) +
KOH (aq)
------>
3. NH4NO3
(aq) +
Ba(OH)2 (aq) ---->
4. HBr (aq) +
Pb(CO3)2 (aq) ----->
5. LiOH (aq) + H3PO4 (aq) --->
Note:
Neutralization ion Exchange Reaction:
1.
When an acid reacts with a base, salt plus water are the
products
Gas Forming Ion Exchange Reactions:
2.
When either H2CO3 or NH4OH is
formed as a product it immediately
decomposes thus demonstrating a gas forming reaction.
Most books
do not show the
either H2CO3 or NH4OH as products, just the
decomposed products of the
gases and water in the answer.