a LiOH+ HCl--->LiCl+H2O
Li+ +OH- +H+ +Cl- --->Li+ +Cl- +H2O
OH- +H+ --->H2O
b 2NaOH+H2S--->Na2S+2H2O
2Na+ +2OH- +2H+ +S2- --->2Na+ +S2- +2H2O
2OH- +2H+ --->2H2O
C 2NaOH + H2SO4--->Na2SO4+2H2O
2Na+ +2OH- +2H+ +SO4 2- --->2Na+ +SO4 2- +2H2O
2OH- +2H+ --->2H2O
D 3KOH+ H3PO4--->K3PO4+3H2O
3K+ +3OH- +3H+ +PO4 3- --->3K+ +PO4 3- +3H2O
3OH- +3H+ --->3H2O