Answer to Question #316247 in Organic Chemistry for Shatha

Question

A student started this experiment with a mixture weighing 2.345 g. After separating the components, a total of 2.765 g of material was recovered. Assume that all the weighings and calculations were done correctly. How do you account for the apparent increase in weight of the recovered material?

Answer 1

The rise in weight is due to the addition of impuriets or the creation of complexes with the solvent molecules, such as hydrates of the substance in water.

When trace amounts of acidic/basic impurities remain in the organic component, they form salt, resulting in a high mass.