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April 18, 2015

April 18, 2015

Posted by **liz** on Tuesday, May 22, 2012 at 8:50pm.

what was the freezing point depression?

what was the molality of the methanol?

how much methanol was in the decanted solution?

how much water was in the decanted solution?

how much methanol would there be in the solution with 1 kg of water, with methanol at the same concentration as she had in her experiment?

what did she find to be molar mass of methanol, assuming she made the calculation properly?

- chemistry -
**DrBob222**, Tuesday, May 22, 2012 at 9:11pm**I don't want to do all of this but I can get you started. You can post back here if there is something you don't understand.**

what was the freezing point depression?**Wouldn't that be the difference between -5.4 and 0.4 or 5.8 degrees C?**

what was the molality of the methanol?**delta T = Kf*m**

You know delta T and Kf, solve for m

how much methanol was in the decanted solution?**Doesn't the problem tell you that she added 10g to the ice bath?**

how much water was in the decanted solution?**Hmm...The mass of the decanted material was 101.8g and the methanol was 10 g so....**.

how much methanol would there be in the solution with 1 kg of water, with methanol at the same concentration as she had in her experiment?

what did she find to be molar mass of methanol, assuming she made the calculation properly?

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