A mixture contains 64 g of dioxygen and 60 g of neon at a total pressure of 10 Bar. The partial pressure in bar of dioxygen and neon are respectively (atomic masses `O = 16, Ne = 20`)

Options

A. 4 and 6
B. 6 and 4
C. 5 and 5
D. 8 and 2

Answer

A

Explanation

`"Moles of "O_(2)=(64)/(32)=2`
`"Moles of Ne"=(60)/(20)=3`
`"Mole fraction of "O_(2)=(2)/(2+3)=0.4`
`p(O_(2))=0.4xx10="4 bar"`
`"Mole fraction of Ne"=(3)/(2+3)=0.6`
`p(Ne)=0.6xx10="6 bar."`