Answer
Verified
398.4k+ views
Hint: Dehydrogenation is the chemical reaction which involves the removal of hydrogen atoms from the reactant. The product formed contains less number of hydrogen atoms than reactants. This reaction can be both a useful process and the problem creating reaction.
Complete answer:
This is the oxidation reaction. As we are asked, which alcohol will turn into the aldehyde by the removal of hydrogen atoms?
So, looking at our option we find that ethyl alcohol is the best suited for conversion of ethyl alcohol into acetaldehyde.
As let’s look the reaction completely for our better understanding –
\[{C_2}{H_5}OH\xrightarrow{{PCC{\text{ or PDC}}}}C{H_3}CHO\]
Thus, our reaction is very much clear that ethyl alcohol undergoes dehydrogenation to form acetaldehyde.
The catalyst used is PCC or PDC, they both control the level of oxidation, as they have the ability to ladder up the oxidation just by one number. Therefore they convert primary alcohols into the aldehydes and the secondary alcohols into the ketones.
These both prevent the further oxidation of acetaldehyde to a carboxylic acid.
Thus, from our above discussion, we can say that the correct option is B i.e. \[{C_2}{H_5}OH\].
Note:
Let’s know about the PCC or PDC a little bit more. PCC \[ - \] pyridinium chlorochromate and PDC \[ - \] Pyridinium dichromate. So they both are chromium based products used in the catalysis of alcohol to aldehydes or ketones and stops the reaction from further oxidation. These catalysts however are slightly toxic and are not completely safe. Earlier they were in a lot of use but nowadays their use is limited or replaced by less toxic catalysts of alcohol oxidation.
Complete answer:
This is the oxidation reaction. As we are asked, which alcohol will turn into the aldehyde by the removal of hydrogen atoms?
So, looking at our option we find that ethyl alcohol is the best suited for conversion of ethyl alcohol into acetaldehyde.
As let’s look the reaction completely for our better understanding –
\[{C_2}{H_5}OH\xrightarrow{{PCC{\text{ or PDC}}}}C{H_3}CHO\]
Thus, our reaction is very much clear that ethyl alcohol undergoes dehydrogenation to form acetaldehyde.
The catalyst used is PCC or PDC, they both control the level of oxidation, as they have the ability to ladder up the oxidation just by one number. Therefore they convert primary alcohols into the aldehydes and the secondary alcohols into the ketones.
These both prevent the further oxidation of acetaldehyde to a carboxylic acid.
Thus, from our above discussion, we can say that the correct option is B i.e. \[{C_2}{H_5}OH\].
Note:
Let’s know about the PCC or PDC a little bit more. PCC \[ - \] pyridinium chlorochromate and PDC \[ - \] Pyridinium dichromate. So they both are chromium based products used in the catalysis of alcohol to aldehydes or ketones and stops the reaction from further oxidation. These catalysts however are slightly toxic and are not completely safe. Earlier they were in a lot of use but nowadays their use is limited or replaced by less toxic catalysts of alcohol oxidation.
Recently Updated Pages
Points A and B are situated along the extended axis class 12 physics JEE_Main
Two identical pn junctions may be connected in series class 12 physics JEE_Main
A piece of copper and another of germanium are cooled class 12 physics JEE_Main
A piece of semiconductor is connected in series in class 12 phy sec 1 JEE_Main
In a pn junction diode not connected to any circui class 12 physics JEE_Main
The width of depletion region in a pn junction is 500 class 12 physics JEE_Main
Trending doubts
Which are the Top 10 Largest Countries of the World?
What is the definite integral of zero a constant b class 12 maths CBSE
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
What are the major means of transport Explain each class 12 social science CBSE
Explain sex determination in humans with the help of class 12 biology CBSE
How much time does it take to bleed after eating p class 12 biology CBSE