2 mole of ethanol is dissolved in 8 mole of water. The mole fraction of water in the solution is
2 mole of ethanol is dissolved in 8 mole of water. The mole fraction of water in the solution is
A. 0.2
B. 0.8
C. 0.4
D. 0.1
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Correct Answer - B
Total number of moles in the solution =10
`:. "Mole fraction of water"=("Moles of water")/("Total moles")`
`=8/10=0.8`
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