Question

4. Sugar particles are found undissolved even after boiling the water.
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Answer 1

Answer:

This is based on the principle of colligative properties of dilute solutions.Accordingly b.pt. of the solvent water increases when a solute is dissolved in it. The increase in b.pt. is directly proportional to the molarity of the solution.Sugar(sucrose) is polyhydroxy molecule soluble in water due to intermolecular H bonding formed bet.-OH of water and -OH of sugar a result water molecules are engaged in solvating sugar molecules and the pressure is lowered.This results in high temperature to boil the solution at 1atm. So boiling point goes above 100 degree Celsius.

Explanation:

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