Which of the following aqueous solution will have the highest boiling point? — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Let's evaluate molarity in 100 mL solution: Sugar ($34.2 \text{ g} / 342 \text{ g/mol} = 0.1 \text{ mol}$), Glucose ($18 \text{ g} / 180 \text{ g/mol} = 0.1 \text{ mol}$), Urea ($6.0 \text{ g} / 60 \text{ g/mol} = 0.1 \text{ mol}$). Since all have the same concentration ($1 \text{ M}$) and are non-electrolytes ($i=1$), their boiling points will be identical. Therefore, correct answer is D.