Q22 / 90 · JEE Main 2024 (08 Apr Shift 2) · Chemistry

A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is ________ (Integer answer) (Given : Molar mass in $\mathrm{g} \mathrm{mol}^{-1}$ Ethyl alcohol : 46 water: 18)

Correct answer: 22

Solution

Mass percent of Alcohol $\begin{aligned} & =\frac{\text { Mass of ethyl alcohol }}{\text { Total mass of solution }} \times 100 \\ & =\frac{1 \times 46}{1 \times 46+9 \times 18} \times 100=\frac{4600}{208} \\ & =22.11 \text { Or } 22\end{aligned}$

Hence, the correct answer is 22.

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A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is ________ (Integer answer) (Given : Molar mass in \(\mathrm{g} \mathrm{mol}^{-1}\) Ethyl alcohol : 46 water: 18)

Solution

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