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A 5.2 molal aqueous solution of methyl a...

A 5.2 molal aqueous solution of methyl alcohol, `CH_(3)OH` is supplied. What is the mole fraction of methyl alcohol in the solution ?

A

`0.086`

B

`0.050`

C

`0.100`

D

`0.190`

Text Solution

Verified by Experts

The correct Answer is:
A
`5.2 m CH_(3)OH` ie 5.2 mol `CH_(3)OH` present in 1 kg water
`X_(M) = (5.2)/(5.2 + (1000)/(18)) = (5.2)/(5.2 + 55.5) = (5.2)/(60.7) = 086`
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