Organic Chemistry

Solution: The first organic compound to be synthesized in the laboratory was urea, by the German chemist Friedrich Wohler in 1828. He synthesized urea by heating ammonium cyanate, an inorganic compound, which rearranged to form urea: This experiment disproved the belief that organic compounds could only be formed in living organisms, marking the beginning of modern organic chemistry.

The correct option is (B): urea

In organic chemistry, functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. The structure of these functional groups can help identify the type of compound.

A ketone is a type of organic compound characterized by the carbonyl group (C=O) bonded to two carbon atoms. This distinguishes it from other carbonyl-containing compounds such as aldehydes, where the carbonyl group is bonded to at least one hydrogen atom.

To identify the functional group of a ketone, look for the general structure:

R₁-C(=O)-R₂,

where R₁ and R₂ are alkyl or aryl groups.

This differs from:

• Aldehydes: R-C(=O)-H
• Esters: R-C(=O)-O-R'
• Alcohols: R-OH

Therefore, the functional group that indicates a ketone is the carbonyl group bonded to two carbon atoms.

In chemistry, the oxidation of ethyl alcohol (ethanol) can be described as a common reaction involving the conversion of alcohol to another functional group. Ethanol, with the chemical formula C₂H₅OH, undergoes oxidation to form an aldehyde. The process involves the removal of hydrogen or addition of oxygen to the ethanol molecule.

The reaction can be summarized as follows:

C₂H₅OH + [O] ⟶ CH₃CHO + H₂O

Here, CH₃CHO represents acetaldehyde, the aldehyde product formed as a result of the oxidation of ethanol. The oxidizing agent, represented in a generalized form as [O], facilitates this conversion by helping remove hydrogen atoms from the ethanol molecule.

Taking into consideration the available options:

1. ester
2. aldehyde
3. ether
4. alkane

The correct outcome of ethanol oxidation in this reaction is aldehyde.