Recently i've been researching the pressurization of water through the releasing of the waters of hydration in hydrates. The goal is to create a volume difference inside a container of fixed volume, basically the volume of the contents should be greater than the volume of the container in order to create pressure. Mathematically this works out and theoretically you can get a volume of 113.21ml from 100ml of a hydrate. But i don't know what to do with these numbers. I want an overall pressure and i'm assuming you can get one from them but i don't know exactly how to calculate it (Is this kind of pressurization of water even possible?). Help would be appreciated.