Calculate the boiling point of an aqueous solution containing 1of MgBr

1.	Calculate the boiling point of an aqueous solution containing 1of MgBr, in 200 g of water. (Atomic mass : Mg 24, Br 80)(K, for H20 0.52 K kg mol-1).0.50 g2
Answer» DTf= kfm dTf= 0.512(10.50/184)1000/200=0.146’C dTf=freezing pt. of pure water- Freezing pt. of solution 0.146=0’C-Freezing pt. of solution Freezing pt. of solution(containing MgBr2)=-0.146’C

Calculate the boiling point of an aqueous solution containing 1of MgBr, in 200 g of water. (Atomic mass : Mg 24, Br 80)(K, for H20 0.52 K kg mol-1).0.50 g2

Answer»

DTf= kf*m

dTf= 0.512*(10.50/184)1000/200=0.146’C

dTf=freezing pt. of pure water- Freezing pt. of solution

0.146=0’C-Freezing pt. of solution

Freezing pt. of solution(containing MgBr2)=-0.146’C