What is the boiling point of the solution in which you are going to cook spaghetti if it contains 51.0 g of NaCl dissolved in 1.30 L of water? Assume the density of water is 1.00 g/mL. Use molar masses with at least as many significant figures as the data given. Enter your answer with two decimal places.

Answer 1

moles NaCl = grams/molar mass
Solve for moles NaCl.

molality = moles NaCl/kg solvent
Solve for molality (kg solvent = 1.30).

delta T = i*Kb*molality
You have i = 2, Kb, and molality. Solve for delta T, then add that to 100 C to find the boiling point.

Answer 2

what's Kb?

Answer 3

Isn't that 0.512 degrees C/m? I think so.