1.

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 ?

Answer»

0.086
`0.050`
`0.100`
`0.190`

Solution :Moles of `CH_(3)OH, n_(CH_(3)OH)=5.2`
Moles of water, `n_("water")=(1000)/(18)=55.55`
`x_(CH_(3)OH)=(5.2)/(5.2+55.55)=0.086`


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