Question

n-Hexane can be converted to benzene by the treatment with:
A. $alc.KMn{O_4}$
B. $alc.KOH$
C. $C{r_2}{O_3}$at 700K
D. $LiAl{H_4}$

Answer 1

Hint: Benzene is an aromatic carbon with 6 carbon atoms. N-Hexane is a straight chain carbon compound with 6 carbon atoms.

Complete step by step answer:
We know that when the n-Hexane molecule reacts with $C{r_2}{O_3}$at 700K, it results in the formation of a benzene compound.
We can write the reaction for this conversion of the n-Hexane compound to the Benzene compound as follows:

In this reaction, the chromium oxide acts as the catalyst and we can carry out this reaction at high temperature and high pressure. Firstly, the n-Hexane molecule undergoes cyclization to form a cyclohexane compound. This cyclohexane compound undergoes aromatisation in the presence of high temperature of 770 K to form the benzene molecule.

So, the correct answer is Option C .

Additional Information:
We know that a cyclic compound is a compound where atoms are connected or joined in the form of a ring structure. In cyclic compounds, all the connected atoms can be carbon, that is carbocycles, none of the atoms can be carbon which are referred to as inorganic cyclic compounds and atoms can be both carbon and non-carbon which are referred to as heterocyclic compounds. Benzene is considered to be the most stable cyclic compound.

Note:
Benzene has the chemical formula ${{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{6}}}$.This compound is soluble in water solution and it is a colourless compound. N-Hexane has the chemical formula ${{\rm{C}}_{\rm{6}}}{{\rm{H}}_{14}}$.This compound is also water soluble and it is also a colourless compound.