Question

Which of the following solutes would be insoluble in water?

A)KBr
B)(NH4)2Cr2O7
C)Ag2SO4
D)Ca(OH)2
E)Fe(C2H3O2)2

Answer 1

and why?

Answer 2

All are slightly soluble. However, C and D would probably be the least soluble.

Of those 2, I'd guess D.

Why? Because of solubility rules: http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html

Answer 3

i ll go for E as here we have to see which is more insoluble