The osmotic pressure of a solution is 2.0 atm at 27 degC. If the concentration is unchanged (no volume change), the osmotic pressure at 127 degC is

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The osmotic pressure of a solution is $2.0$ atm at $2 7^{\circ} C$ . If the concentration is unchanged (no volume change), the osmotic pressure at $12 7^{\circ} C$ is

At fixed concentration

π \propto T

(kelvin).

T_{1} = 300

K and

T_{2} = 400

K. So

π_{2} = 2.0 \times 400/300 = 2.67

atm. Using Celsius values gives the wrong value 9.41.