Question

1.
In a binary solution of methyl alcohol and water, if
the mass of methyl alcohol and water is 48 g and
81 g respectively, then the mole fraction of methyl
alcohol in the solution is
(1) 0.5
(2) 0.25
(3) 0.33
(4) 0.15​

Answer 1

Answer:

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Answer 2

Explanation:

Mass of methyl alcohol =48g(x1)

molar mass of methyl alcohol =32g

mass of water=81g

molar mass of water=18g

mole fraction of methyl alchol

x1=n1/n1+n2

=48/32/48/32+81/18

x1=0.25