The four colligative properties of the dilute solutions help in calulating the molecular mass of sthe solute which is often called observen molecular mass. It may be same as the theoretical molecular mass (calculated form rthe molecular formula) if the solute behaves normally in solution. In case, it undergoes association or dissociation. the observed molar mass gives different results. The nature of the in solution is expressed in terms of Van't Hoff factor (i) which may be 1 (ifthe solute behave normally), less than 1 (if the solute associates) and more than 1 (if the solute dissociates). The extent of association of dissociation is repreented by lapha which is :alpha=underset(("For association"))((i-1)/(1//n-1))or underset(("for dissoviation"))((i-1)/(n-1)) (13) Which of the following is incorrect ?

The four colligative properties of the dilute solutions help in calula

1.	The four colligative properties of the dilute solutions help in calulating the molecular mass of sthe solute which is often called observen molecular mass. It may be same as the theoretical molecular mass (calculated form rthe molecular formula) if the solute behaves normally in solution. In case, it undergoes association or dissociation. the observed molar mass gives different results. The nature of the in solution is expressed in terms of Van't Hoff factor (i) which may be 1 (ifthe solute behave normally), less than 1 (if the solute associates) and more than 1 (if the solute dissociates). The extent of association of dissociation is repreented by lapha which is :alpha=underset(("For association"))((i-1)/(1//n-1))or underset(("for dissoviation"))((i-1)/(n-1)) (13) Which of the following is incorrect ?
Answer» Molecular mass of NaCI found by osmotic PRESSURE measurements is half of the theoretial VALUE Molrvulst msdd og `CH_(5)COOH` in benzene found by cryoscpic method is double the theoretical value Osmotic pressure of 0.1 M glucose solution is half of that of 0.1 M naCI solution. Melecular mass of HCI found by any colligatyive PROPERTY will be same in aqueous solutions and in benzene solution. Solution :Molecular mass of HCI will be different in aqueous than in benzene solution because in aqueous solution, HCI dissociates into ions.