General Chem Question

[TheGoodLife570]

O am having a problem with ionic equations. any help would be appreciated.

heres the problem-

Ba(OH)2 + H3PO4

I need to determine the net equation and full ionic equation. I have no problem finding the net and ionic equations for other problems but I am having a hard time combining the hydroxide and hydrogen (I know it forms H2O, but I can't seem to get the numbers to line up).

Heres as far as I got-

Ba(OH)2 + H3PO4 -----> Ba3(PO4)2 + (Heres the problem, I know the answer when balanced should be 6H2O)

If anyone can show me how(OH)2 and H3 combine

It seems that the more I go over the more I'm confusing myself with a very simple concept

Thank you for any help

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[beckson]

You have to balance the equation.
Look at what you have here: Ba(OH)2 + H3PO4 -----> Ba3(PO4)2
Ba in the reagent needs to become Ba3 and (PO4) needs to become (PO4)2
So if you balance everything you need to have 3Ba(OH)2 + 2H3PO4 -----> Ba3(PO4)2 +y6H20
From the reagent side you get:
3Ba(OH)2 becomes 3 Ba, 6O, 6H
2H3PO4 becomes 6H 2(PO4)
The product side matches. You have 12H's and and 6O's for water

 

[TheGoodLife570]

Thank you so much, that cleared it up for me