Calculate the boiling point

Question

Calculate the boiling point in oC of a solution that contains 24.4 grams of Cr(NO3)3 dissolved in 111 grams of pure H2O. The boiling point and molal boiling point constant, Kb, of pure H2O are 100.0 oC and 0.52 oC/m , respectively.

Answer 1

Moles = 24.4 g/ 238 =0.102

i = 4

delta T = 4 x 0.102 x 0.52 =0.213

b.p. = 100.213 °C