Question

When sulfuric acid and potassium hydroxide neutralize each other to make water and potassium sulfate, how is water formed?

Answer 1

It's formed by the hydrogen ion of the acid and the hydroxide of the base. 

$H_{2} SO_{4} + 2KOH --\ \textgreater \ K_{2} SO_{4} + 2H_{2}O$
Sulfuric Acid + potassium superoxide --> Potassium Sulfate + Heavy Water

Hope this Helps :)