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In the diazotisation of anline with sodi...

In the diazotisation of anline with sodium nitrite and hydrochloride acid, an excess of hydrochloric acid is used primarily to

A

suppress the concentration of free aniline

B

suppress the hydrolysis to phenol

C

ensure a stochiometric amount of nitrous acid

D

neutralise the base liberated

Text Solution

Verified by Experts

The correct Answer is:
A
To suppress the concentration of free amine otherwise it will couple with the diazonium salt to give the corresponding azo dye.
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PRADEEP-ORGANIC COMPOUNDS CONTAINING NITROGEN-COMPETITION FOCUS JEE (MAIN AND ADVANCED)/MEDICAL ENTRANCE SPECIAL (MULTIPLE CHOICE QUESTIONS-I)
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  5. Which of the following diazonium salt is most stable ?

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  6. In the diazotisation of aryl amine, the use of nitrous acid is:

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  10. In the following reaction , B is Aoverset("Bromination")toBoverset(Na...

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  11. The correct sequence of reactions to convert p-nitrophenol into quinol...

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  12. Aniline is reacted with bromine water and the resulting product is tre...

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  13. In the chemical reactions. the compounds 'A' and 'B' respectively...

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  14. The final product in the following reaction sequence is p - chloroan...

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  15. Which of the following is the best method for synthesis of 1 - bromo -...

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  16. In the reaction, The product (E) is

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  17. The final product in the following sequence of ractions is C(6)H(5)NH(...

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  18. Complete reduction of benzene-diazonium chloride with Zn/HCl gives :

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  20. The the identification of beta-napthol using dye test, it is necessary...

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