# What is the partial pressure of water vapor in oxygen gas collected by water displacement at 10°C and 750 mm Hg?

Mar 10, 2017

You want the saturated vapour pressure, ${P}_{\text{SVP}}$.

#### Explanation:

This is a function of temperature only, and at $283 \cdot K$ this site reports that the vapour pressure of water, ${P}_{\text{SVP}}$, is $9.2 \cdot m m \cdot H g$.

And so, ${P}_{\text{Measured"=P_"gas"+P_"SVP}}$,

${P}_{\text{Gas"=P_"Measured"-P_"SVP}}$

$750 \cdot m m \cdot H g - 9.2 \cdot m m \cdot H g = 741.8 \cdot m m \cdot H g$ $=$ ??*atm