Question

the boiling point of water at 735mmHg is 99.073 degrees celcius. What mass of NaCl should be added to 3.11kg water to increase the boiling point to 100.000 degrees celcius? Kb for water = 0.510 K Kg mol-1

Answer 1

bpelevation= kb*m=kb*mass/58 / 3.11

mass=.827*58*3.11 grams

(you do all that more accurately)

Answer 2

where did the 58 come from?

Answer 3

the equation is bpelevation = kb x m x i. so shouldnt you m= bp elevation/(kb x i)??