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Addition of KI accelerates the hydrolysis of primary alkyl halides because:
is a stranger nucleophile in & good leaving group due to weaker base
Which one of the following compound will be least susceptible to elimination of hydrogen bromide ?
(b) At b-position -M gp. prefer elimination.
Alkyl halides can be obtained by all methods except:
Alkyl halides cannot be obtained by the reaction of an alcohol with sodium chloride (NaCl). This reaction does not occur under normal conditions. The other options involve methods like addition of HX to alkenes, free radical halogenation, and conversion of alkyl carboxylates to alkyl halides.
In order to prepare 1-chloropropane, which of the following reactants can be employed?
Which of the following molecules would have a carbon-halogen bond most susceptible to nucleophilic substitution ?
The carbon-halogen bond strength decreases in the order C-F > C-Cl > C-Br > C-I. This trend makes the carbon-iodine bond the weakest and most susceptible to nucleophilic substitution among the given options. Therefore, 2-iodobutane would undergo nucleophilic substitution most readily.
When benzyl chloride is treated with ethanolic KCN, the major product formed is:-
(c) Ph-CH2-Cl+KCN→Ph-CH2-CN
EtOH
Ethyl bromide reacts with lead-sodium alloy to form:-
(a) 4C2H5Br+4Na+Pb→(C2H5)4Pb+4NaBr
Which is gem dihalide?
(a) A gem dihalide possesses two halogens on same carbon atom.
Chlorination of CS2 gives:
(a) CS2 + 2Cl2 CCl4 + 2S
Chloroform is kept in dark coloured bottles because:-
(d) 2CHCl3+1/2O2→COCl2+H2O;COCl2 i.e., phosgene is poisonous gas.
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