Asked by Jessica
68.0g of solute were dissolved in 393 mL of benzene. The solution froze at -0.50°C. The normal freezing point of benzene is 5.5°C and the molar freezing point constant is 5.12°C kg/mol. The density of benzene is .879 g/mol. Calculate the molar mass of the solute.
Answers
Answered by
DrBob222
delta T = Kf*m. You know delta T (normal freezing point - new freezing point) and Kf, solve for m = molality.
m = mols/Kg solvent. You know m and kg solvent (use density for kg solvent; i.e., mass = volume x density). solve for mols.
mols = grams/molar mass. You know mols and grams, calculate molar mass.
m = mols/Kg solvent. You know m and kg solvent (use density for kg solvent; i.e., mass = volume x density). solve for mols.
mols = grams/molar mass. You know mols and grams, calculate molar mass.
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.