This question is based on neutralization reactions: H₃PO₄ + Ba(OH)₂ → ???

Question

Please explain and give me step-by-step procedure.

Thanks!

Answer 1

H₃PO₄ is an triprotic acid and Ba(OH)₂ is a base, so you are dealing with acid/base neutralization.  Since there are 3H⁺ in the acid and 2 OH^- in the base, the ratio will be 2 H₃PO₄ to 3 Ba(OH)₂ in the balanced reaction.

2H₃PO₄ + 3 Ba(OH)₂ ===> 6H₂O + Ba₃(PO4)₂

Hope this explains the process.  Not that there are the same number or each atom on the left and right side of the balanced equation.