Asked by Anna
What mass of salt(NaCl)should you add to 1.20 L of water in an ice cream maker to make a solution that freezes at -10.4∘C?
Answers
Answered by
DrBob222
delta T = i*Kf*m
You have delta T = 10.4
i is the van't Hoff factor which is 2 for NaCl.
Kf = 1.86 for water. Solve for m.
Then m is molality = mols NaCl/kg solvent. You have kg solvent. Solve for mols.
Then mols = grams/molar mass. You have mols and molar mass NaCl; solve for grams NaCl.
You have delta T = 10.4
i is the van't Hoff factor which is 2 for NaCl.
Kf = 1.86 for water. Solve for m.
Then m is molality = mols NaCl/kg solvent. You have kg solvent. Solve for mols.
Then mols = grams/molar mass. You have mols and molar mass NaCl; solve for grams NaCl.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.