Al2(so4)3-->2al+3 + 3so4-2
cucl2--> cu+2 + 2cl-
h3po4<=> h2po4- + h+
h2po4- <=> hpo4-2 + h+
hpo4-2 <=> po4-3 + h+
ba(oh)2--> ba+2 + oh-
zn(no3)2--> zn+2 + 2no3-
h2so4--> 2h+ + so4-2
koh--> k+ + oh-
na2s--> 2na+ + s-2
k2co3--> 2k+ + co3-2
hno3--> h+ + no3-
fe2(so4)3--> fe+3 + 3so4-2
k2so3--> 2k+ + so3-2
na3po4--> 3na+ + po4-3
h2so3<=> h+ + hso3-
hso3-<=> h+ + so3-2
ca(oh)2--> ca+2 + 2oh-