Equal mass of methane and oxygen are mixed in an empty containerat 25^(@)C. The fraction of the total pressure exerted by oxygen is:

Equal mass of methane and oxygen are mixed in an empty containerat 25^

1.	Equal mass of methane and oxygen are mixed in an empty containerat 25^(@)C. The fraction of the total pressure exerted by oxygen is:
Answer» `2/3` `1/3 xx 273/298` `1/3` `1/2`. Solution :Suppose the equal mass of methane and oxygen =w=1 g MOLE FRACTION of oxygen (X)=`(W//32)/(W//32+W//16)` `(1/32)/(3/32)=1/3` Let the TOTAL pressure `(P_(total))` be equal to P. `:.` Pressure exerted by Oxygen (partial pressure) `=XO_2 xxP_(total)=Pxx1/3`.