How do you balance H3PO4 +Mg(OH)-->Mg3(PO4)2 +H20?
Please note that since magnesium is in group 2 it has a valency of 2+ and so the formula for magnesium hydroxide is
This is a typical neutralization reaction of an acid with a base to form a salt and water. The reaction is exothermic, gives off heat,
Doing so we obtain :