Question
Explain aromatization reaction of alkanes. Give its one application.
✓
Answer
$i.$ Straight chain alkanes containing $6$ to $10$ carbon atoms are converted to benzene and its homologues, on heating under $10$ to $20 \ atm$ pressure at about $773 K$ in the presence of $V_2O_5, Cr_2O_3, MO_2O_3,$ etc. supported over alumina
$ii.$ The reaction involves simultaneous dehydrogenation and cyclization. This reaction is known as aromatization or reforming.
This process is used in refineries to produce high quality gasoline which is used in automobiles as fuel.
$ii.$ The reaction involves simultaneous dehydrogenation and cyclization. This reaction is known as aromatization or reforming.
This process is used in refineries to produce high quality gasoline which is used in automobiles as fuel.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write orbital notations for electrons in orbitals with the following quantum numbers.
a. n = 2, l =1
b. n = 4, l = 2
c. n = 3, l = 2
a. n = 2, l =1
b. n = 4, l = 2
c. n = 3, l = 2
Which type of hybridization is present in ammonia molecule? Write the geometry and bond angle present in ammonia.
$65 \%$ of ${ }^{111}$ In sample decays in $4.2 d$. What is its half life?
Answer:
Given: $N _0=100$,
$
N=100-65=35 \text {, }
$
$
t=4.2 d
$
To find: $t_{1 / 2}$
→Answer:
Given: $N _0=100$,
$
N=100-65=35 \text {, }
$
$
t=4.2 d
$
To find: $t_{1 / 2}$
Consider the following molecules and answer the questions:
$CH_3 – CH_2 – CH_2 – Cl, CH_3 – CH_2 – CH_2 – Br, CH_3 – CH_2 – CH_2 – I.$
$i.$ What type of inductive effect is expected to operate in these molecules?
$ii.$ Identify the molecules from these three, having the strongest and the weakest inductive effect.
→$CH_3 – CH_2 – CH_2 – Cl, CH_3 – CH_2 – CH_2 – Br, CH_3 – CH_2 – CH_2 – I.$
$i.$ What type of inductive effect is expected to operate in these molecules?
$ii.$ Identify the molecules from these three, having the strongest and the weakest inductive effect.
After how many seconds will the concentration of radioactive element $X$ will be halved, if the decay constant is $1.155 \times 10^{-3} s^{-1}$?
→On ozonolysis, an alkene forms the following carbonyl compounds. Draw the structure of unknown alkene from which these compounds are formed: $HCHO$ and $CH_3COCH_2CH_3$
→What is meant by covalent radius of the atom? Explain with suitable examples.
Complete the following table:
Why should spotting of mixture be done above the level of mobile phase ?
How is benzene prepared from ethyne/acetylene?