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Question

Same mass of CH4 and H2 is taken in container. The partial pressure caused by H2 is:

A
89
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B
19
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C
12
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D
1
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Solution

The correct option is A 89
Equal mass to be taken =16g
No. of moles of CH4=1616=1 mol
number of moles of H2=162=8
Then, mole fraction of H2=88+1=89
Partial pressure caused by H2=89×Total pressure
Total pressure =1atm (as it is done in a open container)
Partial pressure of H2=89×1=89

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