81.Gaseous hydrogen halides and not their aqueous solutions (i.e., hydrohalic acids) are used for the preparation of alkyl halides from alkenes. Why?
Gaseous hydrogen halides are used for the prepartion of alkyl halides from the alkene because dry hydrogen halides are stronger electrophiles than the H3O+ formed in their water solutions. Moreover, H2O being a nucleophile tends to react with R– to form an alcohol.
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82.Alkyl iodides develop coloration on long standing particularly in light. Give reason.
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83.What happens when an alkyl halide is treated with AgCN and the product is reduced?
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84.
How is acetone converted into iodoform?
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85.Write the IUPAC name of :
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86.Write the IUPAC name of :
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87.Write the structure of DDT.
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88.
Give IUPAC name for C6H5CH2CH2Cl.
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89.
An alkyl halide having molecular formula C4H9Cl is optically active. What is its structure?
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90.
Out of chlorobenzene and chloro-methane which is more reactive towards nucleophilic substitution reactions?
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