Balancing Equations?

Question

I understand the BaSO4 coming together, but where does the 2H2O come from? Please explain?
Ba(OH)2 + H2SO4 --> BaSO4 + 2H2O

Answer 1

you have (OH)2 which means there are 2H's and 2O's. Then you have H2SO4, which gives you another 2H's. So 2H2O would be 4H's and 2Os, which is the sum of the H's and O's from the first part.

Answer 2

from one of the H's in H2SO4 which is released because this is an acid which produces H+ ions and from the (OH) in Ba(OH)2 because it is a base so it will produce OH- ions and you need the 2 so that there are the same number of each atom on both sides of the equations because of the law of the conservation of mass where no matter is lost or gained after a reaction.

Answer 3

it is a double replacement equation which means you switch the first two of each since you know how to get the BaSO4 you are left with (OH)2 and H2O combined you have 2 H2O. It's sounds harder than it really is, hoped I helped

Answer 4

Well in your reactant of Ba(OH)2 the 2 on the outside means that there are 2 oxygen atoms and 2 hydrogen atoms. You also have 2 other hydrogens on the left of your equation. So you have a total of 4 hydrogen and 2 oxygen on the left. On your product side the 2H20, it means that you have 4 hydrogen atoms (2x2) and 2 oxygens.

Answer 5

The extra H from H2SO4 combines with the OH from Ba(OH)2 to make water, H20...

This is an acid/base reaction, which always forms water!

Answer 6

In stoichiometry you have to have the same number of atoms of in the resulting products as you started with.

Ba(OH)2 + H2SO4:

OH2 = 2H+2O

Ba: 1
H: 4
S: 1
O: 6

BaSO4 is one of the products thus it leaves you.

H: 4
O: 2

This can be written as 2H2O. Note that this nomenclature means two (2) H20 molecules.

Answer 7

on the left side there r two molecules of OH (hydroxide) and two in hydrogen sulfate so on the right barium sulfate does not contain hydrogen so there must be 2 molecules of water