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

Which reagent will you use for the following reaction? CHX3CHX2CHX2CHX3⟶CHX3CHX2CHX2CHX2Cl+CHX3CHX2CHClCHX3 - Chemistry

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प्रश्न

Which reagent will you use for the following reaction?

\[\ce{CH3CH2CH2CH3 -> CH3CH2CH2CH2Cl + CH3CH2CHClCH3}\]

विकल्प

  • Cl2/UV light

  • \[\ce{NaCl + H2CO4}\]

  • Cl2 gas in dark

  • Cl2 gas in the presence of iron in dark

MCQ
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उत्तर

Cl2/UV light

Explanation:

Free radical chlorination or bromination of alkanes gives a complex mixture of isomeric mono- and polyhaloalkanes, which is difficult to separate as pure compounds. In this case, a mixture of the two isomeric forms of butane is obtained by the use of Cl2/UV light as per the reaction below -

\[\ce{CH3CH2CH2CH3 ->[Cl2/UV light][or heat] CH3CH2CH2CH2Cl + CH3CH2CHClCH3}\]

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अध्याय 10: Haloalkanes and Haloarenes - Exercises [पृष्ठ १३४]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 10 Haloalkanes and Haloarenes
Exercises | Q I. 6. | पृष्ठ १३४

संबंधित प्रश्न

Discuss the mechanism of alkaline hydrolysis of bromomethane.


Write the structure of an isomer of compound C4H9Br which is most reactive towards SN1 reaction


Out of , which is more reactive towards SN1 reaction and why?


C–Cl bond length in chlorobenzene is shorter than C–Cl bond length in CH3–Cl.


The stability order for carbocation is _______.

(A) 2° > 3° > 1° 

(B) 3° > 2° > 1°

(C) 3° > 1° > 2°

(D) 1° > 3° > 2°


Identify 'A' in the following reaction -

(a) 2- Bromo-2 methylbutane

(b) 1 -Bromo-2,2-dimethylpropane

(c) 1 - Bromo - 3 -methylbutane

(d) 1 - Bromo- 2 -methylpropane


In a coordination entity of the type [PtCl2(en)2]2+ which isomer will show optical isomerism?


AgCN reacts with haloalkanes to form isocyanide. Haloalkanes react with KCN to form alkyl cyanides as the main product. Why?


Which one is most reactive towards SN1 reaction?


Which one of the following halogen compounds is difficult to be hydrolysed by SN1 mechanism?


Most reactive halide towards SN1 reaction is ____________.


The order of reactivities of the following alkyl halides for an SN2 reaction is:


The correct order of increasing the reactivity of C–X bond towards nucleophile in following compounds.


    (I)


     (II)

(CH3)3CCl
    (III)

(CH3)2CHCl
    (IV)


Compound ‘A’ with molecular formula \[\ce{C4H9Br}\] is treated with aq. \[\ce{KOH}\] solution. The rate of this reaction depends upon the concentration of the compound ‘A’ only. When another optically active isomer ‘B’ of this compound was treated with aq. \[\ce{KOH}\] solution, the rate of reaction was found to be dependent on concentration of compound and \[\ce{KOH}\] both.

(i) Write down the structural formula of both compounds ‘A’ and ‘B’.

(ii) Out of these two compounds, which one will be converted to the product with inverted configuration.


Give reason for the following:

The product formed during SN1 reaction is a racemic mixture.


The number of chiral carbons present in the molecule given below is ______.


Explain why Grignard reagents should be prepared under anhydrous conditions.


Which of the following is halogen exchange reaction?


Which of the following reactions is an example of nucleophilic substitution reaction?


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