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?

Question

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) 0.050 (B) 0.100 (C) 0.190 (D) 0.086

Tardigrade Admin · Accepted Answer

x =( text No. of moles of compound / text Total no. of mole of solution ) For 1 kg solvent x=(5.2/55.5+5.2) =(5.2/60.7)=0.086

Q. A 5.2 molal aqueous solution of methyl alcohol, $C H_{3} O H$ is supplied. What is the mole fraction of methyl alcohol in the solution?

0.050

0.100

0.190

0.086

$x = \frac{No. of moles of compound}{Total no. of mole of solution}$

For $1 k g$ solvent

$x = \frac{5.2}{55.5 + 5.2} = \frac{5.2}{60.7} = 0.086$

Q. A 5.2 molal aqueous solution of methyl alcohol, CH3​OH is supplied. What is the mole fraction of methyl alcohol in the solution?