Arrange the following aqueous solutions in order of increasing boiling point, explain your answer: 0.120 m glucose (C6H12O6), 0.05 m LiBr, 0.05 m Zn(NO3)2. Using data the boiling point constants given in the test book, calculate the boiling points of each of the above aqueous solutions to see if your predictions were correct.

Answer 1

delta T = i*Kb*m
i = 1 for glucose
i = 2 for LiBr
i = 3 for Zn(NO3)2

Kb is constant so delta T is a function of i*m. Those will arrange for you.
You can plug the numbers into the formula and check for yourself. Post your work if you get stuck.

Answer 2

LiBr<Glucose<Zinc nitrate