Question:
Which technique among the following, is most appropriate in separation of a mixture of 100 mg of p-nitrophenol and picric acid?
Which technique among the following, is most appropriate in separation of a mixture of 100 mg of p-nitrophenol and picric acid?
Updated On: Jul 6, 2024
- Steam distillation
- 2-5 ft long column of silica gel
- Sublimation
- Preparative TLC (Thin Layer Chromatography)
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The Correct Option is D
Solution and Explanation
Thin layer chromatography is a technique used to isolate non-volatile mixtures.
Hence, mixture of p-nitrophenol and Picric acid is separated by TLC.
So, the correct option is (D): Preparative TLC (Thin Layer Chromatography).
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Concepts Used:
Organic Chemistry – Some Basic Principles and Techniques - Reaction Mechanism
SN1 Reaction Mechanism:
SN1 reaction mechanism takes place by following three steps –
- Formation of carbocation
- Attack of nucleophile
- Deprotonation
SN2 Reaction Mechanism:
The SN2 reaction mechanism involves the nucleophilic substitution reaction of the leaving group (which generally consists of halide groups or other electron-withdrawing groups) with a nucleophile in a given organic compound.
Electrophilic Aromatic Substitution Reaction Mechanism:
The mechanism of an electrophilic aromatic substitution reaction contains three main components which are:
- A new sigma bond from C=C is formed during the reaction in the arene nucleophile.
- Due to the breaking of the C-H sigma bond, a proton is removed.
- The C=C bond is reformed and it restores the aromaticity of the compound.
Electrophilic Substitution Reaction Mechanism:
The electrophilic substitution reaction mechanism is composed of three steps, which will be discussed more below.
- Electrophile Generation
- Carbocation Formation
- Proton Removal