Question

Which of the following representation of I (Van’t Hoff factor) is not correct?

• A. $i = \frac{Observedcolligativeproperty}{Expectedcoligativeproperty}$
• B. $i = \frac{Normalmolecularmass}{Observedmolecularmass}$
• C. $i = \frac{Numberofmoleculesactuallypresent}{Numberofmolecules\exp ectedtobepresent}$
• D. $i = \frac{\begin{aligned} & Totalnumberofparticlestaken \\ & beforeassociation/dissociation \end{aligned}}{\begin{aligned} & Numberofparticlesafter \\ & association/dissociation \end{aligned}}$

Answer 1

Answer: (D)

$i = \frac{\begin{aligned} & Totalnumberofparticlestaken \\ & beforeassociation/dissociation \end{aligned}}{\begin{aligned} & Numberofparticlesafter \\ & association/dissociation \end{aligned}}$

Answer 2

$i = \frac{Totalno.ofparticlesafterassociation/dissociation}{No.ofparticlestakenbeforeassociaiton/dissociation}$