A solution of glucose () is . The density of the solution is . The molality of the solution is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
A solution of glucose ($C_6H_{12}O_6$) is $10\% \text{ (w/w)}$. The density of the solution is $1.2 \text{ g/mL}$. The molality of the solution is:
Answer: A
💡 Solution & Explanation
In $100 \text{ g}$ solution, solute $= 10 \text{ g}$ and solvent $= 90 \text{ g}$. <br>$\text{Moles of glucose} = 10 / 180 = 0.0555 \text{ mol}$. <br>$\text{Molality} = \frac{0.0555 \text{ mol}}{0.09 \text{ kg}} \approx 0.617 \text{ m}$.
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