A 250 mL sample of oxygen is collected over water at 25°C and 760.0 torr pressure. What is the pressure of the dry gas alone?

Question

A 250 mL sample of oxygen is collected over water at 25°C and 760.0 torr pressure. What is the pressure of the dry gas alone?

1 Answer

Impact of this question

18515 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-29T18:57:59

You need to know the $saturated vapour pressure$ $"saturated vapour pressure"$ of water at $25$ $25$ $^{\circ} C$ $""^@C$ .

Explanation:

The gas collected over water consists of (i) whatever the gas is, and (ii) the saturated vapour pressure. At $25$ $25$ $^{\circ} C$ $""^@C$ , $SVP$ $"SVP"$ $=$ $=$ $23.8$ $23.8$ $m m \cdot H g$ $mm*Hg$ . At higher temperatures, how would you expect $SVP$ $"SVP"$ to evolve.

Thus the pressure exerted by the gas is thus $(760 - 23.8) \cdot m m \cdot H g$ $(760-23.8)*mm*Hg$ .

$SVP$ $"SVP"$ would always be given in such a problem.

Science

Math

Humanities

... and beyond

A 250 mL sample of oxygen is collected over water at 25°C and 760.0 torr pressure. What is the pressure of the dry gas alone?

1 Answer

Explanation:

Related questions

Impact of this question