The image displays the chemical structure of tetrahydrofuran, commonly abbreviated as THF. It is a cyclic ether with the molecular formula \( C_4H_8O \). Explanation: - The structure consists of four carbon atoms and one oxygen atom arranged in a five-membered ring. - The oxygen atom is denoted by the letter "O" in the ring. - The four carbon atoms form the rest of the ring and are implied at the vertices where lines meet, as is common in organic chemistry line structures. - The lines represent chemical bonds between the atoms. This structure is often used in organic chemistry due to its solvent properties and is a key intermediate in the synthesis of various chemicals.

Q: dilute HCI

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Q: `OH CI

A: See products in red boxes.

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Q: Он 2-pentanol 3-pentanone

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Q: ОН B) 'N. H

A:

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Q: CI HO3S. CO2H .CI Br

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Q: (c) Hint C4 => C5! ОН Н =0

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A:

Q: lov + 애 + EtOH + MeOH → N

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Q: HO

A:

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Q: НО, (p)

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A:

Q: HO.

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Q: "ropose a mechanism for the following reaction. но H,SO, + H,0

A:

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A: Given

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.