Asked by Mohamed
How many grams of ethanol C2H5OH(1),must be added to 500.0 g of water to make a solution that freezes at0.00 F? The molal freezing point depression constant water is 1.86 C.kg/mole
Answers
Answered by
DrBob222
(F-32)*5/9 = (0-32)*5/9 = -32*5/9 = about -17.8 but you need to confirm.
delta T = Kf*molality
17.78/1.86 = molality = ?
?molality = mols/kg solvent.
Plug in 0.500 for kg solvent and ?molality and solve for mols.
Then mols = grams/molar mass.
You know mols and molar mass, solve for grams.
Post your work if you get stuck.
delta T = Kf*molality
17.78/1.86 = molality = ?
?molality = mols/kg solvent.
Plug in 0.500 for kg solvent and ?molality and solve for mols.
Then mols = grams/molar mass.
You know mols and molar mass, solve for grams.
Post your work if you get stuck.
Answered by
Emma
I need help on knowing how to do this problem
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.