Answer: The freezing point and boiling point of the solution are
and
respectively.
Step-by-step explanation:
Depression in freezing point:

where,
= freezing point of solution = ?
= freezing point of water =

= freezing point constant of water =

i = vant hoff factor = 1 ( for non electrolytes)
m = molality
= mass of solute (ethylene glycol) = 21.4 g
= mass of solvent (water) =

= molar mass of solute (ethylene glycol) = 62g/mol
Now put all the given values in the above formula, we get:


Therefore,the freezing point of the solution is

Elevation in boiling point :

where,
= boiling point of solution = ?
= boiling point of water =

= boiling point constant of water =

i = vant hoff factor = 1 ( for non electrolytes)
m = molality
= mass of solute (ethylene glycol) = 21.4 g
= mass of solvent (water) =

= molar mass of solute (ethylene glycol) = 62g/mol
Now put all the given values in the above formula, we get:


Thus the boiling point of the solution is
