Pre–Lab Study Questions 9
1. What is an insoluble salt?
2. Are salts more soluble in water at higher temperature or lower temperature?
3. Indicate whether each of the following salts is soluble or insoluble in water and give a
reason.
Salt Soluble or
Insoluble in
Water?
Reason
a. 4BaSO
b. AgBr
c. 3 2Pb(NO )
d. 3CaCO
e. 3 4Na PO
4. For each combination of solutions that produces an insoluble salt, write the net ionic
equation for the formation of the insoluble salt. If no reaction occurs, write NR.
Solutions Net Ionic Equation Products
a. 3 2NaCl( ) Pb(NO ) ( )aq aq+ ¾¾®
b. 4 3 4 3 2(NH ) PO ( ) Pb(NO ) ( )aq aq+ ¾¾®
c. 2 2 3CaCl ( ) Na CO ( )aq aq+ ¾¾®
d. 3 2AgNO ( ) K S( )aq aq+ ¾¾®
