Question

deffine the term van't hoff facter.​

Answer 1

Answer:

the term van't Hoff factor means the ratio between the actual concentration of particles produced when the substance is dissolved and the concentration of substance as calculated from its mass

Answer 2

$\Large\color{darkblue}\underline{\underline{\sf Van't \: Hoff\: law-}}$

According to it gas equation PV = nRT is also followed by dilution Solution when pressure of gas is replaced by osmotic pressure of Solution.

$\large\color{violet}\bullet\underline{\boxed{\sf PV=nRT}}$

$\large\color{violet}\bullet\underline{\boxed{\sf πV=nRT}}$

• π = Osmotic Pressure of Solution (atm)
• V = Volume of Solution (L)
• n = mole of Solute
• R = Gas Constant = ${\sf 0.0821\:atm mol^{-1}K^{-1}}$

$\implies{\sf π=\left(\dfrac{n}{V}\right)RT }$

$\color{violet}\implies{\sf π=CRT}$

At constant temperature

${\sf π\:\:\propto\:\:C}$

π = is a colligative property