In a cylinder of pressure 1 bar, there is the hydrogen of 20

in-a-cylinder-of-pressure-1-bar-there-is-the-hydrogen-of-20

In a cylinder of pressure 1 bar, there is the hydrogen of 20 grams and neon of 50 grams, what is a partial pressure of hydrogen?

A. 0.2

B. 0.8

C. 0.4

D. 0.6

I have been asked this question during an online exam.

I want to ask this question from States of Matter in portion States of Matter of Chemistry – Class 11

The correct choice is B. 0.8

For explanation: As we know that the partial pressure of a gas is the product of its mole fraction and the total pressure of the gases present,  so here the partial pressure of hydrogen is 10/10 + 2.5 = 0.8. Mole fraction is given by the number of moles of required as per the total number of the gas moles.