Chemistry - Liquid Solution Question with Solution | TestHub

The osmotic pressure of an electrolyte solution is given by the formula:

$\pi =iCRT$

Given:
$i=1.125$
$C=0.1\text{ M}=0.1{\text{ mol dm}}^{-3}$
$R=0.0821{\text{ atm dm}}^3{\text{ K}}^{-1}{\text{ mol}}^{-1}$
$T=300\text{ K}$

Substituting the given values into the formula:

$\pi =1.125\times 0.1\times 0.0821\times 300$

$\pi =1.125\times 2.463$

$\pi =2.770875\text{ atm}$

Rounding off to two decimal places, we get $2.77\text{ atm}$.

Answer: 2.77 atm