Answered: What mass in grams of glucose (MM =…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 42P

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What mass in grams of glucose (MM = 180.2 g/mol) would need to be dissolved in 100.0 g of water to decrease the vapor pressure of the solution to 22.0 torr? (P° of water is 23.5 torr)

Expert Solution

Step 1 Roult's law

To solve this problem we will use Roult's law as the solute glucose in non-volatile

Using this first we calculate mole fraction of glucose then by using this mole fraction we will calculate the number of mole glucose needed

And hence we will able to calculate the mass of glucose needed.

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Where did 0.937 come from?

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