Answered: In a laboratory experiment, students…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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In a laboratory experiment, students synthesized a new compound and found that when 12.21 grams of the compound were dissolved to make 173.0 mL of a ethanol solution, the osmotic pressure generated was 9.42 atm at 298 K. The compound was also found to be nonvolatile and a non-electrolyte.

What is the molar mass they determined for this compound?

Expert Solution

Step 1

Osmotic pressure is the minimum pressure applied to solution side in which movement of solvent through semipermeable membrane.

It is denoted by π.

$π = CRT . π is osmotic pressure . C is concentration . R is gas constant . T is temperature .$

Concentration is equal to the ratio of number of moles to the volume of solution.

$C o n c e n t r a t i o n = \frac{N u m b e r o f m o l e s .}{V o l u m e o f s o l u t i o n .}$

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