# How do you find vapor pressure of water?

##### 1 Answer
Jun 11, 2016

You measure it at a particular temperature, or look up a convenient table.

#### Explanation:

I don't know how water vapour pressure is measured. I know that at $100$ ""^@C, the vapour pressure of water is $1$ $a t m .$

At temperatures below he normal boiling point, saturated vapour pressures are extensively tabulated. When you collect a gas by bubbling it thru water, you must always quote the saturated vapour pressure at the particular temperature.