Question

At ${27}^{0}C$, 36 g of glucose per litre has an O.P of 4.91 atm. If the osmotic pressure of the solution is 1.5 atm at the same temperature, what should be its concentration?

• A. 1.051 M
• B. 0.061 M
• C. 0.066 M
• D. 1.62 M

Answer 1

The correct option is B 0.061 M

$36$ $g/L$ of glucose $=\frac{36}{180}=0.2$ $mol/L$ of glucose

$\pi =CRT$

$\therefore \pi \propto C$

$\therefore \frac{4.91}{1.5}=\frac{0.2}{C}$

$\therefore C=0.061$ $M$