00:01
Hello students, to answer the first question, the observed boiling point of the product is compared to the known boiling point of pure components.
00:12
If the boiling point of the product is close to the known boiling point of the pure component, it suggests that the product is of that component whose boiling point is same as that of the observed one.
00:30
To answer the second question, in the plot of boiling point versus volume of distillate, it can be concluded that the purity of the product increases as the boiling point becomes more consistent and if the boiling point was consistent throughout the distillation, it suggests that the product is relatively pure.
01:12
To answer the third question, part a, the effect of a soluble non -volatile substance is to increase the boiling point of the solvent which is known as boiling point elevation and it occurs because the non -volatile solute reduces the vapor pressure of the solvent and hence it requires higher temperature to achieve the necessary vapor pressure for boiling.
01:54
To answer the b part, the insoluble solvent such as sand and charcoal has no effect on the boiling point as they are insoluble.
02:10
To answer the c part, the temperature of the vapor pressure in the part a will be higher than the boiling point of the pure solvent...