Question

The plot of osmotic pressure II) vs concentration (mol L–1 ) for a solution gives a straight line with slope 25.73 L bar mol–1 . The temperature at which the osmotic pressure measurement is done is
(Use R = 0.083 L bar mol–1 K–1 )

• A. 37°C
• B. 310°C
• C. 25.73°C
• D. 12.05°C

Answer 1

Answer: (A)

37°C

Answer 2

Using $R = 0.083$, calculate:
$T = \frac{25.73}{0.083} = 310 \, K$
Convert to Celsius:
$T = 310 - 273 = 37^\circ C$.