The osmotic pressure of a solution of NaCl is 0.10 atm and that of a glucose solution is 0.20 atm. The osmotic pressure of a solution formed by mixing 1 L of the sodium chloride solution with 2 L of the glucose solutioin is x × 10^–3 atm. X is ___. (nearest integer)

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answer is 167.

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Detailed Solution

$π_{mix .} = \frac{π_{1} v_{1} + π_{2} v_{2}}{v_{1} + v_{2}} = \frac{0.1 \times 1 + 0.2 \times 2}{3} = \frac{0.5}{3} = 0.167 = 167 \times 10^{- 3} atm .$

x=167.

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