Equal masses of methane and oxygen are mixed in an empty container at `25^(@)C`. The fraction of the total pressure exerted by oxygen is:A. `(2)/(3)`B. `(1)/(3) xx (273)/(298)`C. `(1)/(3)`D. `(1)/(2)`

Equal masses of methane and oxygen are mixed in an empty container at

1.	Equal masses of methane and oxygen are mixed in an empty container at `25^(@)C`. The fraction of the total pressure exerted by oxygen is:A. `(2)/(3)`B. `(1)/(3) xx (273)/(298)`C. `(1)/(3)`D. `(1)/(2)`
Answer» Correct Answer - C Let the mass of methane and oxygen is w mole fraction of oxygen `=((w)/(32))/((w)/(32)+(w)/(16))` `=((1)/(32))/((1)/(32)+(1)/(16))=((1)/(32))/((3)/(32))=(1)/(3)` Let the toal pressure be P The pressure exerted by oxygen ( partial pressure ) `= X_(O_(2))xxP_("total") implies Pxx(1)/(3)` , Hence, (c ) is correct .

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Equal masses of methane and oxygen are mixed in an empty container at `25^(@)C`. The fraction of the total pressure exerted by oxygen is:A. `(2)/(3)`B. `(1)/(3) xx (273)/(298)`C. `(1)/(3)`D. `(1)/(2)`

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