Calculate the mole fraction of solute in the | vedclass

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Question

(A) Step $1$: Calculate the moles of solute $(n_{solute})$.$n_{solute} = \frac{	ext{mass}}{	ext{molar mass}} = \frac{394 \ g}{342 \ g \ mol^{-1}} \a

Vedclass · Accepted Answer

$0.032$

Vedclass · Answer

(A) Step $1$: Calculate the moles of solute $(n_{solute})$.$n_{solute} = \frac{	ext{mass}}{	ext{molar mass}} = \frac{394 \ g}{342 \ g \ mol^{-1}} \approx 1.152 \ mol$.Step $2$: Calculate the moles of solvent $(n_{solvent})$.$n_{solvent} = \frac{622 \ g}{18 \ g \ mol^{-1}} \approx 34.556 \ mol$.Step $3$: Calculate the mole fraction of solute $(X_{solute})$.$X_{solute} = \frac{n_{solute}}{n_{solute} + n_{solvent}} = \frac{1.152}{1.152 + 34.556} = \frac{1.152}{35.708} \approx 0.032$.

Calculate the mole fraction of solute in the solution if the solution is prepared by dissolving $394 \ g$ of a nonvolatile solute in $622 \ g$ of water at $30^{\circ}C$ (Molar mass of solute $= 342 \ g \ mol^{-1}$).

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