What is the mole fraction of the solute in a | vedclass

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Question

(A) $2.5 \, m$ aqueous solution means $2.5 \, 	ext{moles}$ of solute are dissolved in $1 \, 	ext{kg}$ $(1000 \, 	ext{g})$ of water.Number of moles

Vedclass · Accepted Answer

$0.04$

Vedclass · Answer

(A) $2.5 \, m$ aqueous solution means $2.5 \, 	ext{moles}$ of solute are dissolved in $1 \, 	ext{kg}$ $(1000 \, 	ext{g})$ of water.Number of moles of solute $(n_{	ext{solute}})$ = $2.5 \, 	ext{mol}$.Number of moles of solvent (water,$n_{	ext{solvent}}$) = $\frac{1000 \, 	ext{g}}{18 \, 	ext{g/mol}} \approx 55.55 \, 	ext{mol}$.Mole fraction of solute $(x_{	ext{solute}})$ = $\frac{n_{	ext{solute}}}{n_{	ext{solute}} + n_{	ext{solvent}}}$.$x_{	ext{solute}} = \frac{2.5}{2.5 + 55.55} = \frac{2.5}{58.05} \approx 0.043$.

What is the mole fraction of the solute in a $2.5 \, m$ aqueous solution?

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