A mixture of equal weights of methane and oxygen was taken in an empty container at 25oC. The fraction of total pressure exerted by oxygen is:
A
13
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B
12
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C
23
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D
34
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Solution
The correct option is A13 .PO2P=(nO2nO2+nCH4) no. of moles of oxygen = nO2=w32 no. of moles of methane = nCH4=w16 Substituting the above values in the equation, we get PO2P=1:3