What is the solubility of oxygen gas (in m) at 25 ° c if the pressure of oxygen gas is 1155 mm hg?

You want the saturated vapour pressure,

P

SVP

.

Explanation:

This is a function of temperature only, and at

283

⋅

K

this site reports that the vapour pressure of water,

P

SVP

, is

9.2

⋅

m

m

⋅

H

g

.

And so,

P

Measured

=

P

gas

+

P

SVP

,

P

Gas

=

P

Measured

-

P

SVP

750

⋅

m

m

⋅

H

g

-

9.2

⋅

m

m

⋅

H

g

=

741.8