Question:   How do you write the chemical equation for an acid-base reaction?  I understand how to find the formulas of the acid and the base, but I don't know what the products of the reaction will be.

Answer:

Acid-base reactions are like regular double displacement reactions, where you have the cations from two chemical compounds switching places with one another.  The difference is that in an acid-base reaction, one of the products is water.  How this works is that the H+ from the acid combines with the OH- from the base to form water, while the cation from the base and the anion from the acid combine to form a new ionic compound (which is usually dissolved in water after the reaction is complete).

One of the products for an acid-base reaction is water.  The other, as mentioned above, is just the cation from the base combined with the anion from the acid.  An example is below: