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# A solution is made by dissolving 23.88 mg of a protein in ISBN: 9780321910295 34

## Solution for problem 89P Chapter 19

Introductory Chemistry | 5th Edition

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Problem 89P

A solution is made by dissolving 23.88 mg of a protein in water and diluting to a total volume of 20.0 mL. The osmotic pressure of the solution is 3.66 torr at 25°C. What is the molar mass of the protein? (The osmotic pressure of a solution is given by the following equation: Osomotic Pressure = M × R × T, where M is the molarity of the solution, R is the gas constant, and T is temperature in K.)

Step-by-Step Solution:

Step 1 </p>

Given:

Mass of protein = 23.88 mg = 0.02388 g

Volume = 20.0 mL = 0.020L

Temperature = 25 oC + 273 = 298K

Osmotic pressure = 3.66 torr

Step-2

Osmotic pressure = M R T

Where M = molarity, R = gas constant and T = temperature in K

0.0048 atm = M 0,0821 L atm mol-1 K-1 298K

Moles...

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321910295

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