Which of the following ionic compounds is INSOLUBLE in water?

Question

a. CuSO4
b. AgBr
c. KI
d. (NH4)2CO3
e. LiNO3

Answer 1

Silver Fluoride is somewhat soluble in water, but the other halides are mostly insoluble.

Answer 2

http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html