Homework Help is Here – Start Your Trial Now!
Science
Chemistry
Osmotic pressure can be very useful for estimating the molecular weights of macromolecules for whom a molecular formula may not be available as it can provide greater precision in the measurement. (a) 1.364 g of a protein with molecular mass 1.78 × 104 g/mol is dissolved in enough water to create 100.0 mL of solution at 298 K. What would be the expected osmotic pressure (in bars) of this solution? (b) If 1.853 g of a protein are dissolved in enough water to make up 100.0 mL of solution at 298 K, then the osmotic pressure is observed to be 2.521 torr (3.361 × 10-³ bar). What is the molar mass (g/mol) of the protein?

Osmotic pressure can be very useful for estimating the molecular weights of macromolecules for whom a molecular formula may not be available as it can provide greater precision in the measurement. (a) 1.364 g of a protein with molecular mass 1.78 × 104 g/mol is dissolved in enough water to create 100.0 mL of solution at 298 K. What would be the expected osmotic pressure (in bars) of this solution? (b) If 1.853 g of a protein are dissolved in enough water to make up 100.0 mL of solution at 298 K, then the osmotic pressure is observed to be 2.521 torr (3.361 × 10-³ bar). What is the molar mass (g/mol) of the protein?

Chemistry
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...
See similar textbooks
icon
Related questions
Question
Osmotic pressure can be very useful for estimating the molecular weights of macromolecules for whom a molecular formula may not be available as it can provide greater precision in the measurement. (a) 1.364 g of a protein with molecular mass 1.78 × 104 g/mol is dissolved in enough water to create 100.0 mL of solution at 298 K. What would be the expected osmotic pressure (in bars) of this solution? (b) If 1.853 g of a protein are dissolved in enough water to make up 100.0 mL of solution at 298 K, then the osmotic pressure is observed to be 2.521 torr (3.361 × 10-³ bar). What is the molar mass (g/mol) of the protein?
Transcribed Image Text:Osmotic pressure can be very useful for estimating the molecular weights of macromolecules for whom a molecular formula may not be available as it can provide greater precision in the measurement. (a) 1.364 g of a protein with molecular mass 1.78 × 104 g/mol is dissolved in enough water to create 100.0 mL of solution at 298 K. What would be the expected osmotic pressure (in bars) of this solution? (b) If 1.853 g of a protein are dissolved in enough water to make up 100.0 mL of solution at 298 K, then the osmotic pressure is observed to be 2.521 torr (3.361 × 10-³ bar). What is the molar mass (g/mol) of the protein?
Expert Solution
Step 1

For part (a):

The mass of protein = 1.364 g

The molar mass of the protein = 1.78 × 104 g/mol

The volume of the solution = 100.0 mL

Temperature = 298 K

We have to find the osmotic pressure.

For part (b):

The mass of the protein = 1.853 g

The volume of the solution = 100.0 mL

The osmotic pressure = 3.361 × 10-3 bar

Temperature = 298 K

We have to find the molar mass of the protein.

steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Solutions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS