Which of the following is/are correct regarding van't Hoff factor, i ?

Question

Professor PC Thomas Classes · Answer

All the statements are correct. The value of a colligative property depends on the number of solute particles. In the case of non electrolytes, the observed value of colligative property will be same as that calculated ( $i=1$ ). When the solute undergoes dissociation, number of particles increases giving abnormally high values ( $i>1$ ). In case of association, number of solute particles decreases giving abnormally low values ( $i<1$ ). Abnormal colligative properties follow the equations $\frac{p_{1}^{0}-p_{1}}{p_{1}^{0}}=i \chi_{2} \Delta T_{b}=i K_{b} m \Delta T_{f}=i K_{f} m \pi=i c RT$