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प्रश्न
Name the reagent used in the following reaction:
Oxidation of a primary alcohol to carboxylic acid.
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उत्तर
Acidified potassium dichromate or neutral, acidic or alkaline KMnO4 is used in the oxidation of primary alcohol to carboxylic acid.
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संबंधित प्रश्न
Give reasons for the following:
o-nitrophenol is more acidic than o-methoxyphenol.
Write the mechanism of the following reaction :
Give the equation of the following reaction:
Oxidation of propan-1-ol with alkaline KMnO4 solution.
Name the reagent used in the following reaction:
Oxidation of a primary alcohol to aldehyde.
When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place:
\[\begin{array}{cc}
\phantom{.......................}\ce{Br}\\
\phantom{......................}|\\
\ce{CH3 - CH - CH - CH3 ->[HBr] CH3 - C - CH2 - CH3}\\
\phantom{.}|\phantom{......}|\phantom{......................}|\phantom{........}\\
\phantom{}\ce{CH3}\phantom{...}\ce{OH}\phantom{...................}\ce{CH3}\phantom{.....}
\end{array}\]
Give a mechanism for this reaction.
(Hint: The secondary carbocation formed in step II rearranges to a more
stable tertiary carbocation by a hydride ion shift from 3rd carbon atom.)
Lucas reagent is ____________.
In the reduction \[\ce{R - CHO + H2 -> RCH2OH}\] the catalyst used is:
Which one of the following on oxidation gives a ketone?
\[\ce{CH3CH2OH}\] can be converted into \[\ce{CH3CHO}\] by ______.
Identify the secondary alcohols from the following set:
- \[\ce{CH3CH2CH(OH)CH3}\]
- \[\ce{(C2H5)3COH}\]
Mark the correct increasing order of reactivity of the following compounds with HBr/HCl.
| (a) |  |
| (b) |  |
| (c) |  |
Explain why nucleophilic substitution reactions are not very common in phenols.
What is Lucas reagent?
What happens when (CH3)3 C – OH is heated with Cu/573 K?
Write the chemical equation in support of your answer.
Which of the following observation is shown by 2-phenyl ethanol with Lucas Reagent?
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene
