Question

Which of the following aqueous solution have highest boiling point?
(a) 0.1 m urea solution

(b) 0.1 m glucose solution

(c) 6% (w/w) urea solution

(d) 6% (w/w) glucose solution​

Answer 1

Answer:

6% (w/w) urea solution

Explanation:

Step 1: A 1 molal solution has a lower concentration than a 1 molar aqueous solution. One mole of solute is present in one litre of a molar solution, whereas one mole is present in one kilogramme of a molal solution. Aqueous state is the liquid state of materials that are liquified by dissolving the substance in water, whereas molten state is the liquid state of materials with low melting points that are liquified by the application of heat.

Step 2: The temperature at which a liquid's vapour pressure matches the pressure around it and the liquid turns into a vapour is known as a substance's boiling point.

​Step 3:Boling point of substance is  increases  at the time we add some electrolyte in  soln ex. NaCl, CaCl2,etc.

Urea $\mathrm{NH}_2 \mathrm{CONH}_2 \quad \% \frac{\mathrm{w}}{\mathrm{w}} >$ molality

Glucose $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6$

$6 \%$ w/w urea solution $> 6 \%$ w/w glucose solution.

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