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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Why can aryl halides not be prepared by reaction of phenol with HCl in the presence of ZnClX2?

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प्रश्न

Why can aryl halides not be prepared by reaction of phenol with \[\ce{HCl}\] in the presence of \[\ce{ZnCl2}\]?

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उत्तर

Aryl halides can't be prepared by reaction of phenol with \[\ce{HCl}\] in presence of \[\ce{ZnCl2}\] because the carbon-oxygen bond in phenols has partial double bond character and it, being stronger than a single bond, is difficult to break.

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अध्याय 10: Haloalkanes and Haloarenes - Exercises [पृष्ठ १४४]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 10 Haloalkanes and Haloarenes
Exercises | Q III. 63. | पृष्ठ १४४

संबंधित प्रश्न

Draw the structure of the major monohalo product in the following reaction:


Which of the following structures is enantiomeric with the molecule (A) given below:


Ethylidene chloride is a/an ______.


Haloalkanes contain halogen atom (s) attached to the sp3 hybridised carbon atom of an alkyl group. Identify haloalkane from the following compounds.

(i) 2-Bromopentane

(ii) Vinyl chloride (chloroethene)

(iii) 2-chloroacetophenone

(iv) Trichloromethane


Which alkyl halide has maximum density


Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

\[\ce{CH3C(C2H5)2CH2Br}\]


Name the following halide according to the IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl, or aryl halide:

\[\ce{CH3CH2C(CH3)2CH2I}\]


Write the structure of the following organic halogen compound.

1,4-Dibromobut-2-ene


Name the following halide according to the IUPAC system and classify it as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:

CH3CH2C(CH3)2CH2I


Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

\[\ce{CH3C(C2H5)2CH2Br}\]


Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

\[\ce{CH3C(Cl)(C2H5)CH2CH3}\]


Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

CH3CH2C(CH3)2CH2l


Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

\[\ce{CH3CH2C(CH3)2CH2I}\]


Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:

\[\ce{CH3C(C2H5)2CH2Br}\]


Give the IUPAC name of the compound.

\[\ce{CICH2 C ≡ CCH2 Br}\]


Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:  

\[\ce{CH3CH2C(CH3)2CH2I}\] 


Write the structure of the following organic halogen compound.

4-tert-Butyl-3-iodoheptane


Write the structure of the following organic halogen compound.

4-tert-Butyl-3-iodoheptane


The given compound

 

is an example of__________.


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