Answer
a) $K^+$ and $OH^-$
b) $K^+$ and ${SO_4}^{2-}$
c) $Li^+$ and ${NO_3}^-$
d) ${NH_4}^+$ and ${SO_4}^{2-}$
Work Step by Step
a) $KOH\rightarrow K^+ + OH^-$
b) $K_2SO_4\rightarrow 2K^+ + {SO_4}^{2-}$
c) $LiNO_3\rightarrow Li^+ + {NO_3}^-$
d) $(NH_4)_2SO_4\rightarrow 2{NH_4}^++{SO_4}^{2-}$
