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

In the following pair of halogen compounds, which compound undergoes a faster SN1 reaction? Cl and Cl

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प्रश्न

In the following pair of halogen compounds, which compound undergoes a faster SN1 reaction?

लघु उत्तर
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उत्तर

The activity of halogen compounds in SN1 reaction depends on the stability of the carbocation formed due to ionization. The order of stability is tertiary > secondary > primary. Hence, 2° alkyl chloride is more active than 1° alkyl chloride. Hence, 2° alkyl chloride is more active in SN1 reaction.

The halogen which reacts faster due to the greater stability of the 2° carbocation than the 1° carbocation is:

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पाठ 6: Haloalkanes and Haloarenes - Intext Question [पृष्ठ १८६]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 6 Haloalkanes and Haloarenes
Intext Question | Q 6.8 (ii) | पृष्ठ १८६

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


Which would undergo SN1 reaction faster in the following pair and why?


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


Which alkyl halide from the following pair would you expect to react more rapidly by an SN2 mechanism? Explain your answer.

CH3CH2CH2CH2Br or \[\begin{array}{cc}
\ce{CH3CH2CHCH3}\\
\phantom{.....}|\\
\phantom{.......}\ce{Br}\ 
\end{array}\]


Which compound in the following pair will react faster in SN2 reaction with OH−?

(CH3)3CCl or CH3Cl


Arrange the compounds of the following set in order of reactivity towards SN2 displacement:

2-Bromo-2-methylbutane, 1-Bromopentane, 2-Bromopentane


SN1 reactions are accompanied by racemization in optically active alkyl halides.


What is the action of the following on ethyl bromide?

moist silver oxide


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


Which of the following pairs is/are correctly matched?

  Reaction Product
I RX + AgCN RNC
II RX + KCN RCN
III RX + KNO2 \[\begin{array}{cc}
\phantom{.......}\ce{O}\\
\phantom{.....}/\\
\ce{R - N}\phantom{....}\\
\phantom{.....}\backslash\backslash\\
\phantom{.......}\ce{O}
\end{array}\]
IV RX + AgNO2 \[\ce{R-O-N=O}\]

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


SN2 mechanism proceeds through intervention of ____________.


Racemic compound has ____________.


Which of the following alkyl halides will undergo SN1 reaction most readily?


Write the structures and names of the compounds formed when compound ‘A’ with molecular formula, \[\ce{C7H8}\] is treated with \[\ce{Cl2}\] in the presence of \[\ce{FeCl3}\].


Which one of the following compounds is more reactive towards SN1 reaction?


Give reason for the following:

The product formed during SN1 reaction is a racemic mixture.


Arrange the following compounds in increasing order of reactivity towards SN2 reaction.

2-Bromopentane, 1-Bromopentane, 2-Bromo-2-methylbutane


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