Question

0.1 mol of sugar was dissolved in 1 kg of water.freezing point of solution was found to be 272.814 K.what conclusion would you draw about molecular state of sugar? If of water is 1.86 K Kg / mol

Answer 1

Answer : The freezing point of 0.1 molal solution of a substance is 272.814 K.

Solution : Given,

Molality = 0.1 molal

The formula used for depression in freezing point is,

where,

= freezing point of pure solvent = 273 K

= freezing point of solution

m = molality

= molal depression constant

Now put all the given values in this formula, we get

Therefore, the freezing point of 0.1 molal solution of a substance is 272.814 K.