Why do pressures have to be equal in water displacement methods?

Subject: Why do pressures have to be equal in water displacement methods?

Date: Mon Apr 17 01:42:39 2000
Posted by Kelly
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Area of science: Chemistry
ID: 955953759.Ch

Message:


In lab methods using water displacement, the pressure inside the graduated 
cyliner (where the grad cylinder is used to collect a gas) has to be the 
same as the pressure outside the grad cylinder. Why is this? What happens 
if the pressures are different?

Re: Why do pressures have to be equal in water displacement methods?

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