Question

What would be the osmotic pressure at ${17}^{\circ }C$ of an aqueous solution containing 1.75 g of sucrose $\left(C_{12}{H}_{22}{O}_{11}\right)$ per 150 $c{m}^3$ of solution?

(Multiply the answer by 100).

Answer 1

Since we have

$1000c{m}^3$ = $1L$

therefore 150 $c{m}^3$ = 0.15 L

we have,

$\pi =CRT$

$\pi =\frac{1.75}{346\ast 0.15}\ast 0.0821\ast 290$

$\pi =0.81atm$

$\pi \ast 100=81$