Home
Class 11
CHEMISTRY
There is a mixture of H2 and He which co...

There is a mixture of `H_2` and He which contains 40% by mass of `H_2`. Calculate the fraction of total pressure exerted by `H_2`

A

`4//7`

B

`3//7`

C

`4//9`

D

`5//9`

Text Solution

Verified by Experts

The correct Answer is:
A
Let the total mass of gases be 100 g
Mass of `H_2 = 40`g , Moles of `H_2 = (40)/(2) = 20`
Mass of He = 60 g , Moles of He `=(60)/(4) = 15`
Mole fraction of `H_2= (20)/(15 + 20) =(20)/(35) = (4)/(7)`
`4//7` is the fraction of pressure exerted by `H_2` .
Promotional Banner

Similar Questions

Explore conceptually related problems

Mixture of O_2 and H_2 is used as

Equal weight of CH_(4) " and " H_(2) are mixed in an empty container at 25^(@)C . The fraction of the total pressure exerted by H_(2) is

The density of a solution containing 40% by mass of HCl is 1.2 g/mL. Calculate the molarity of the solution.

Equal weight of oxygen and He are mixed in a closed container . The fraction of total pressure exerted by He gas is

A gaseous mixture of H_2 and CO_2 gases contains 66 mass % of CO_2 . The vapour density of the mixture is :

A gaseous mixture of H_(2) and NH_(3) gas contains 68 mass % of NH_(3) . The vapour density of the mixture is-

A gaseous mixture of H_(2) and CO_(2) gas contains 66 mass % of CO_(2) . The vapour density of the mixture is :

Equal masses of helium and oxygen are mixed in a container at 25 C^(@) . The fraction of the total pressure exerted by oxygen in the mixture of gases is

In a mixture of equal weights of H_(2) and He gases at pressure of "6" atm the partial pressure of helium is "