Question

An aqueous solution of a non-volatile solute boils at 100.17∘C. What is the depression in the freezing point for the solution in ∘C?  [Kb​ and Kf​ for water is 0.512 and 1.86∘C/m respectively​

Answer 1

Answer:

Correct option is C - 0.62

Explanation:

The elevation in the boiling point =ΔTb

=100.17−100=0.17 degree celsius

ΔTb = Kbm

0.17=0.512m

m=0.332m

The depression in the freezing point =

ΔTf = Kfm = 1.86×0.332=0.62

Hence, the correct option is C.

Answer 2

Answer:

An atom is the smallest unit of ordinary matter that forms a chemical element.More than 99.94% of an atom's mass is in the nucleus. The protons have a positive electric charge, the electrons have a negative electric charge, and the neutrons have no electric charge.

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