Question:
Kjeldahl's method is used in the estimation
of
Kjeldahl's method is used in the estimation
of
Updated On: Jul 12, 2022
- nitrogen
- halogens
- sulphur
- oxygen
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Kjeldahl's method is simpler and more
convenient than Duma's method. This method is
largely used for the estimation of nitrogen in food
stuff, drugs, fertilisers and many other organic
compounds. However, this method cannot be used
for organic compounds containing nitrogen in the
ring such as pyridine, quinoline and organic
compounds containing nitro (-N$O_2$) and
diazo (-N = N-) groups.
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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