I have a question about osmotic pressure. I took a test in chemistry and this was a multiple choice question.

It said given the molar mass of each solution, which one had the high osmotic pressure.

So a high osmotic pressure, means a high molar mass or a low molar mass?

See GK's answer above.

Thanks, Ms.Sue.

Changing browsers seems to cause confusion.

To determine which solution has a higher osmotic pressure based on molar mass, you need to understand the relationship between osmotic pressure and molar mass.

Osmotic pressure is directly proportional to the molar mass of the solute. In other words, as the molar mass increases, the osmotic pressure also increases. This relationship can be explained by the fact that larger molecules or ions have greater difficulty passing through a semipermeable membrane, resulting in higher osmotic pressure.

Therefore, the solution with the higher molar mass will have the higher osmotic pressure. In your multiple-choice question, you should choose the solution with the higher molar mass as the one with the high osmotic pressure.