Question

A solution contain 320g of methyl alcohol and 540g of water . The mole fraction of methyl alcohol in solution is

Answer 1

Answer:

1/4 is the mole fraction

Explanation:

Answer 2

Answer:

See below.

Explanation:

First, we convert the masses of the compounds to their mole quantities.

320 grams of methyl alcohol ( methanol ) is,

$= \frac{320}{32} = 10 \ mol$

Similarly, 540 grams of water is,

$= \frac{540}{18} = 30 \ mol$

Hence, the total molar mass of the solution is,

$= 30 + 10 = 40 \ mol$

Hence, the mole fraction of methyl alcohol is,

$x_{CH_3OH} = \frac{10 \ mol}{40 \ mol} = 0.25$

Which gives us the answer.