What is the change in boiling point for a 0.615m solution of Mgl2 in water?

Answer :  The change in boiling point is,

Explanation :

Formula used :

where,

= change in boiling point = ?

i = Van't Hoff factor = 3 (for MgI₂ electrolyte)

= boiling point constant for water =

m = molality  = 0.615 m

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

Therefore, the change in boiling point is,

catya that's not even a b or c