If boiling point of urea solution is 100 18^ C and kb for water is 0.512 ~K ~kg ~mol ⁻¹ , molality of solution is? (Boiling point of water =100^ C )

Step-by-step solution

(D) T _ b =(100.18+273)-(100+273)=0.18 ~K K _ b =0.512 ~K ~kg ~mol ⁻¹, ~m =? T _ b = K _ b m m = T _ b K _ b m = 0.18 ~K 0.512 ~K ~kg ~mol ⁻¹ =0.35 ~mol ~kg ⁻¹