1 molal aqueous solution of an electrolyte is 60% ionised. The boiling point of the solution at 1 atm is K. (Rounded-off to the nearest integer)

[Given: for = 0.52 K kg mol⁻¹]

Question

1 molal aqueous solution of an electrolyte  is 60% ionised. The boiling point of the solution at 1 atm is  K. (Rounded-off to the nearest integer)

[Given:  for  = 0.52 K kg mol⁻¹]

Canvas Classes · Accepted Answer

Strategy:
 Find the van't Hoff factor () based on the dissociation of the electrolyte  and the degree of ionization. Calculate the elevation in boiling point, and finally determine the boiling point of the solution in Kelvin.

Step 1: Determine van't Hoff factor ()
. Total number of particles () = .
Percent ionization = 60%, so .

Step 2: Calculate 
, .

Step 3: Calculate the boiling point
Freezing point of pure water is often taken as 373 K.

Rounding to the nearest integer: 375.

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