Question

Osmotic pressure of a solution containing 7.0g of a solute per 100ml of it is found to be 25 mmhg at 37°c. calculate the molar mass of the solute. (r= 8.314/kj/mol)

Answer 1

Answer:

Osmotic pressure = Conc.(Molarity)*R*T(in k)

Explanation:

Let the molar mass = x

Thus molarity is 7/0.1x

Osmotic Pressure =  7/0.1x * 8.314 * 310

We know that Osmotic Pressure is 25 mmhg

25 = 18041.38/0.1x

0.1x = 18041.38/25

x = 18041.38/2.5

Thus molar mass = 7,216.552 g/mol