MyQuestionIcon

3

You visited us 3 times! Enjoying our articles? Unlock Full Access!

Dalton's Law of Partial Pressures

A gaseous mix...

Question

A gaseous mixture containing equal masses of $H e$ and $C H_{4}$ is a total pressure of $2 a t m$ . Calculate partial pressure of $H e$ .

Open in App

Solution

Let $x g m$ of $H e$ and $C H_{4}$ be present.

Given, $P_{t o t a l} = 2 a t m$

Number of moles of $H e = \frac{x}{4}$

Number of moles of $C H_{4} = \frac{x}{16}$

According to Dalton’s law of partial pressure,

$P_{A} = χ_{A} P_{t o t a l}$

$χ_{A}$ is mole fraction of $A$

$χ_{C H_{4}} = \frac{\frac{x}{4}}{\frac{x}{4} + \frac{x}{16}} = \frac{0.25}{0.3125} = 0.8$

$P_{C H_{4}} = 0.8 \times 2 = 1.6 a t m$
$∴ P_{H e} = 0.4 a t m$

Suggest Corrections

thumbs-up

1

Similar questions

Q. Equal mass of

H_{2}

H e

C H_{4}

are mixed in empty container at

300

K, when total pressure is

2.6

atm. The partial pressure of

H_{2}

in the mixture is:

10 L

flask contains a gaseous mixture of

C O

C O_{2}

at a total pressure of

2 a t m

298 K

0.20 m o l e

C O

is present, find its partial pressure.

Q. Gaseous mixture of contains

56 g

N_{2},

44 g

{C O}_{2}

16 g

{C H}_{4} .

The total pressure of mixture is

720 a t m

H g

The partial pressure of

{C H}_{4}

Q. A gaseous mixture contain

. The total pressure of the mixture is

. The partial pressure of

Q. A gaseous mixture containing equal amount of nitrogen and methane has total pressure

7.86

300

K. Calculate the partial pressure (in mm Hg) of methane in the mixture.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Dalton's Law of Partial Pressure

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Dalton's Law of Partial Pressures

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon