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A solution of glucose in water is labelled as $10 \% \mathrm{w} / \mathrm{w}$, that would be the molality and mole fraction of each component in the solution? If the density of solution is $1.2 \mathrm{~g} \mathrm{~mL}^{-1}$ then what shall be the molarity of the
A solution of glucose in water is labelled as $10 \% \mathrm{w} / \mathrm{w}$, that would be the molality and mole fraction of each component in the solution? If the density of solution is $1.2 \mathrm{~g} \mathrm{~mL}^{-1}$ then what shall be the molarity of the
Chemistry | Previous Year Question Papers
A solution of glucose in water is labelled as $10 \% \mathrm{w} / \mathrm{w}$, that would be the molality and mole fraction of each component in the solution? If the density of solution is $1.2 \mathrm{~g} \mathrm{~mL}^{-1}$ then what shall be the molarity of the

Solution
10 percent $w / w$ solution of glucose in water means $10 g$ glucose and $90 \mathrm{~g}$ of water.
$10 \mathrm{~g}$ of glucose $=\frac{10}{180}=0.0555$ moles
And $90 \mathrm{~g}$ of $\mathrm{H} 2 \mathrm{O}=\frac{90}{180}=5$ moles
Molality of solution
$$
\begin{array}{l}
=\frac{\text { Moles of solute } \times 1000}{\text { Mass of solutionin grams }} \\
=\frac{0.0555}{90} \times 1000=0.617 \mathrm{~m}
\end{array}
$$

i

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