Chapter 6: Chemical Reactions
Date:____________
Section 4: Aqueous Solutions - Notes
Objectives:
 Determine if a compound is soluble.
Aqueous Solutions:

A compound is _____________________ in a particular liquid if it _________________________
in that liquid.

A compound is __________________________ if it does ________________________________
in the liquid.

An aqueous solution is a ______________________________________ mixture of a substance
with __________________.
o
When ionic compounds dissolve in water, they usually ___________________________
into their component _________.

A sodium chloride solution, NaCl(aq), does not contain any ________________units.
o

Only dissolved ________________ and _________________ are present.
Substances (such as NaCl) that completely dissociate into ions in solution are called
__________________________________________.

Pure water does ______________________________ electricity.

Ions in a sodium chloride solution ______________________________ electricity, causing the
bulb to ______________.

AgNO3(aq) is a ____________________________________ solution.

When compounds containing polyatomic ions such as ____________ dissolve, the polyatomic
ions dissolve as _________________________.

Not all ______________________________________ dissolve in water.
o
AgCl does __________________________________ in water.
o
It does _____________________________________ into independent ions.
Solubility Rules:

A compound is __________________________ in a particular liquid if it dissolves in that liquid;
a compound is __________________________ if it does not dissolve in the liquid.

For _______________________________________, empirical rules of solubility have been
deduced from observations of many compounds.
 Soluble Compounds 
 Exceptions 
For example:

Ca(NO3)2 is _______________________

Hg2Cl2 is _______________________

LiBr is _______________________

CaSO4 is _______________________
 Insoluble Compounds 
 Exceptions 
For example:

Al2S3 is _______________________

K2S is _______________________

CaCO3 is _______________________

Na3PO4 is _______________________

Pb(OH)2 is _______________________

NH4OH is _______________________
Practice: Use the solubility rules to predict which of the following substances are likely to be soluble in
water:

Aluminum nitrate

Magnesium chloride

Rubidium sulfate

Nickel (II) hydroxide

Lead (II) sulfide

Magnesium hydroxide

Iron (III) phosphate

Silver bromide