How do you balance #HCl + Ba(OH)_2 -> BaCl_2 + H_2O#?
Add a two in front of the
When Balancing acid-base reactions, typically you balance the elements which are the salt's cation and anion's first, here the barium and the chlorine, the oxygen next, and the hydrogen should now be balanced.
It is important to know all the valences of the species to make sure you have the salt right, look at the number of hydrogen and the acid and the number of hydroxides on the base for these numbers.
First we consider the barium, there is one on the LHS and one on the RHS, so we're good.
Second we consider the chlorine, there is one on the LHS and two on the RHS, so we need to have two moles/atoms of
Third we consider the oxygen, since there are two
Now we count up the hydrogen's (it should be balanced already).
There are two
This is the final form of the equation,