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JEE Main 20203 SeptemberEvening Shift

Exam: JEE Main
Year: 2020
Date: 3 September
Shift: Evening Shift
Subject: Chemistry
Chapter: States of Matter

JEE Main 2020 · 3 September · Evening Shift · Chemistry · States of Matter

A mixture of one mole each of H _ 2 , He and O _ 2 each are...

A mixture of one mole each of

{H}_{2}

,

He

and

{O}_{2}

each are enclosed in a cylinder of volume

V

at temperature T. If the partial pressure of

{H}_{2}

is

2atm,

the total pressure of the gases in the cylinder is:

Options

A $6atm$
B $38atm$
C $14atm$
D $22atm$

Correct answer

A. $6atm$

Step-by-step solution

${P}_{gas} = \dfrac{{n}_{gas}RT}{V}$

as $n, T \text{ and } V$ constant so

${P}_{{H}_{2}} = {P}_{{O}_{2}} = {P}_{He} = 2atm$

So, ${P}_{Total} = {P}_{{H}_{2}} + {P}_{{O}_{2}} + {P}_{He} = 6atm$

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