The osmotic pressure of an aqueous solution of hemoglobin at 15 ° C is 483.9 N / m2. The concentration of the solution

The osmotic pressure of an aqueous solution of hemoglobin at 15 ° C is 483.9 N / m2. The concentration of the solution is 3.43 kg / m3. Calculate the molar mass of hemoglobin.

Formula for determining osmotic pressure:

P = C • R • T,

where P is the osmotic pressure, C is the concentration of the solute (in moles per liter of solution), T is the absolute temperature, R is the gas constant.

Let’s calculate the molar concentration:

C = P / R • T = 483.9 / 8.314 • (273 + 15) = 0.2 mol.

The molar concentration will be equal to:

M = C / Cm = 3.43 / 0.2 = 17.15 kg / mol or 17150 g / mol.