Archive
5th of April 2017
Chemistry
Q:

What is the pressure in a mixture of 4g of O2 AND 2g of H2 confined in a bulb of 1 litre at 0 degree Celsius is (1) 45.215 atm (2) 31.205 atm (3) 25.215 atm (4) 15.210 atm

Raunakgandhi666 Gandhi - CBSE - Class XI Science

Wednesday, April 05, 2017 at 17:49:PM

A:

Given:

V = 1L

T = 273K

Let us find the Partial pressure of O2.

No. of moles = 4/32 =0.125 moles

P1= nRT/v =0 .125x0.082 x 273/1 =2.80 atm

Now let us find the partial pressure of H2.

P2 = nRT/v =1 x 0.082 x 273/1 =22.386 atm

Total pressure of the mixture = 2.80 + 22.38 =25.18 atm

Correct option is (3)

Wednesday, April 05, 2017 at 18:40:PM