Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
What is the boiling point of a 3m sugar solution?
What is the boiling point of 2m NaCI
What is the freezing point of a 3m sugar solution?
Please help step by step! Thank you very much! I dont know how to calculate boiling points and freezing points! ):
1 Answer
- Simonizer1218Lv 76 years ago
The formula to use is ∆T = imK
i = van't Hoff factor which is 2 for NaCl since it goes to Na+ and Cl- (2 ions) and is 1 for sucrose (unionized)
m = molality = moles solute/kg solvent
K = freezing or boiling constant
Boiling point for 2 m NaCl: ∆T = (2)(2)(0.512) = 2.05 degrees. So boiling point = 100+2.05 = 102.5 deg C
Freezing point for 3 m sugar: ∆T = (1)(3)(1.86) = 5.6 degrees. So freezing point = 0-5.6 = -5.6 deg C
