# Problem: Membrane osmometry is a technique used to find the molecular weight of polymers by determining the osmotic pressure of a solvent across a semipermeable membrane. What is the molecular weight of the water soluble polymer, polyacrylamide, with a concentration of 100 g/L that produces an osmotic pressure of 8 × 10−3 atm at 25◦C?1. 30,900 g/mol2. 305,000 g/mol3. 2,600,000 g/mol4. 25,600 g/mol

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###### Problem Details

Membrane osmometry is a technique used to find the molecular weight of polymers by determining the osmotic pressure of a solvent across a semipermeable membrane. What is the molecular weight of the water soluble polymer, polyacrylamide, with a concentration of 100 g/L that produces an osmotic pressure of 8 × 10−3 atm at 25C?

1. 30,900 g/mol

2. 305,000 g/mol

3. 2,600,000 g/mol

4. 25,600 g/mol

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Our tutors have indicated that to solve this problem you will need to apply the The Colligative Properties concept. You can view video lessons to learn The Colligative Properties. Or if you need more The Colligative Properties practice, you can also practice The Colligative Properties practice problems.

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Based on our data, we think this problem is relevant for Professor Laude's class at TEXAS.