Question

Albumin is human protein plasma with a molar mass of 69 000 g mol─1. What would be the osmotic pressure of a solution of this protein containing 2.0 g per 100 mL at 25 C. Assume that the experiment is carried out using a salt solution for solvent and a membrane soluble to the salt.

Answer 1

Answer on Question #55003 - Chemistry - Other

Question:

Assume that the experiment is carried out using a salt solution for solvent and a membrane soluble to the salt. Albumin is human protein plasma with a molar mass of $69\,000\ \mathrm{g\ mol^{-1}}$. What would be the osmotic pressure of a solution of this protein containing $2.0\ \mathrm{g}$ per $100\ \mathrm{mL}$ at $25^{\circ}\mathrm{C}$. Assume that the experiment is carried out using a salt solution for solvent and a membrane soluble to the salt.

$$P = CRT$$ $$T = 25 + 273$$ $$T = 293\,K$$ $$C = \frac{n}{V}$$ $$n = \frac{m}{M}$$ $$P = \frac{mRT}{MV}$$ $$P = \frac{2 \times 8.314 \times 298}{69000 \times 0.1}$$ $$P = 0.718\,kPa$$

Answer: $0.718\ \mathrm{kPa}$

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