For each of the following water-soluble compounds, indicate the ions present in an aqueous solution:

Question

NaI
K2SO4
NaCN
Ba(OH)2
(NH4)2SO4

would the answer to NaI be Na+ I-? Should there be more to my answer? Would K2SO4 be K+ SO-? Thanks for the explanation.

Answer 1

NaI is ok.
K2SO4 will be K^+ and SO4^-2
NaCn is Na^+ + CN^-
Ba(OH)2 is Ba^+ and OH^-
(NH4)2SO4 is NH4^+ and SO4^-2
I think the purpose of this question is to help you concentrate on knowing the polyatomic ions such s sulfate, cyanide ion, hydroxide etc.