Question

Define (i) Van't Hoff-Boyle;s law (ii) Van't Hoff Charle's law.

Answer 1

Van't Hoff Boyle Law of solution :

$\to$ At constant temperature the osmotic pressure $(\sqcap )$ of a delute solution is directly proportional to its molar concentration $\left(C\right)$ or inversely proportional to volume $\left(V\right)$ of the solution.

Explanation : $\pi \propto C$ but $C=\frac{n}{V}$

$\therefore \pi \propto \frac{n}{V}\to \pi \propto \frac{1}{V}$

Or say $\pi V=$ constant [ $n$ is no. of moles of solute dissolved in liters ]

Van't Hoff Charle's Law of solution :

$\to$ The concentration remaining constant, the osmotic pressure $\left(\pi \right)$ of a dilute solution is directly proportional to absolute temperature $\left(T\right)$ of the solution.

Explanation : $\pi \propto T$

$\frac{\pi }{T}=$ constant.