Question

Drying the substances- (A) removes moisture from it. (B) spoils it faster. (C) make it unfit. (D) promotes growth of bacteria​

Answer 1

Answer:

promote growth of bacteria

Answer 2

Drying the substances

Explanation:

• Drying agents (also known as desiccants) are used in a variety of industries, including food, medicines, packaging, electronics, and many more.
• A desiccant is a hygroscopic substance that creates or maintains a dry atmosphere in its immediate vicinity. It is chemically stable and chemically inert in its ideal state (i.e., silica).
• Unfortunately, because the drying agent comes into close touch with the solvent and the chemical in the chemistry lab, this is not always the case.
• Many organic solvents are immiscible with aqueous solutions, yet because of their polarity, they can dissolve substantial amounts of water, e.g., diethyl ether dissolves 7% of its weight in water, whereas tetrahydrofuran is entirely miscible with water.
• Unfortunately, water is a substance that many compounds find difficult to remove because they either hang on to it well (such as alcohols) or the molecule is steam volatile.
• The bottom line is that the more polar a solvent is, the more hygroscopic it is since it dissolves water more readily.
• Thus, eliminating water and other contaminants from a solution can be a difficult task, but it is important if the reagents are water sensitive, such as Grignard chemicals, or if water has a negative impact on the reaction yield or pace.
• To chemically eliminate the water in the solvent, drying chemicals such as calcium hydride (CaH2), sodium metal (in conjunction with benzophenone), or lithium aluminium hydride (LiAlH4) are utilised.
• Because certain compounds are relatively reactive and difficult to handle, they are rarely utilised in undergraduate laboratories.