Calculate the freezing point of the solution containing 0.105 m k2s. calculate the boiling point of the solution above. -g

Answer :

The freezing point of a solution is

The boiling point of a solution is

Explanation :

First we have to calculate the freezing point of solution.

Formula used :  

where,

= change in freezing point

= freezing point of solution = ?

= freezing point of water =

i = Van't Hoff factor = 3 (for K₂S electrolyte)

= freezing point constant for water =

m = molality  = 0.105 m

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

Thus, the freezing point of a solution is

Now we have to calculate the boiling point of solution.

Formula used :  

where,

= change in boiling point

= boiling point of solution = ?

= boiling point of water =

i = Van't Hoff factor = 3 (for K₂S electrolyte)

= boiling point constant for water =

m = molality  = 0.105 m

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

Thus, the boiling point of a solution is

c. 4.54 x 10–12 j happens to be correct