Generate Quiz 6A0741806B306

The colorless, crystalline substance known as dichlorodiphenyltrichloroethane, or DDT, is frequently used as an insecticide in the agricultural industry. It functions by stopping insects’ nervous systems.

R.—O- is a strong nucleophile because it is an electron-efficient species.

Alcohol is least acidic because of the unstable alkoxide ion, while phenol is more acidic because of resonance in phenoxide, followed by water.

Because it is not strong enough, phenol does not react with CaCO3.

Generally speaking, ethers are volatile liquids with weak hydrogen bonds. They work well as solvents because they are also very flammable and have low boiling points. Hospitals do not use ethers as disinfectants because they are not toxic.

This choice implies that the iodoform precipitates are yellow in color. This assertion is accurate. Iodoform is a pale yellow solid that can precipitate as yellowish flakes or crystals during certain chemical reactions.

The process of combining an organic acid (RCOOH) with an alcohol (ROH) to create an ester (RCOOR) and water is known as esterification. It can also be defined as a chemical reaction that produces at least one ester product. An esterification reaction between a carboxylic acid and an alcohol or phenol yields ester.

Because the negative charge in the phenoxide ion is delocalized—it is shared by several carbon atoms in the benzene ring—rather than localized on the oxygen atom as it is in an alkoxide ion, phenols are significantly more acidic than alcohols. However, ethane and ethyl chloride do not exhibit acidic properties. Option D is therefore accurate.

Typically, concentrated sulfuric acid or concentrated phosphoric (V) acid, H3PO4, are employed as acid catalysts in the dehydration of alcohol.

PTB has made reference to this.