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ORGANIC CHEMISTRY TEST

1. Which is the best-suited method for the separation of para and ortho-nitrophenols from a 1:1 mixture?
A. Crystallisation
B. Chromatography
C. Sublimation
D. Steam distillation
E. All of the above

2. Which of the following is the most deactivating meta directing group in an aromatic substitution reaction?
A. -COOH
B. -SO₃H
C. -NO₂
D. -CN
E. -NO

3. Homologous series of alkanols have a general formula:
A. [tex]C_nH_{2n}O_2[/tex]

Sagot :

GinnyAnswer

Final answer:

Chromatography is the best method for separation of nitrophenols, -NO2 is the most deactivating meta directing group, and alkanols' general formula is CnH2n+1OH.


Explanation:

The best-suited method for the separation of para and ortho-nitrophenols from a 1:1 mixture would be chromatography. It allows for the efficient separation of compounds based on their interactions with the stationary phase.

The most deactivating meta directing group in aromatic substitution reaction is -NO2. This group withdraws electron density from the ring, making it less reactive towards electrophilic substitution.

The homologous series of alkanols has a general formula of CnH2n+1OH, where n represents the number of carbon atoms in the molecule.


Learn more about Organic Chemistry here:

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