Which statements about substitution reactions are correct?I. The reaction between sodium hydroxide and 1-chloropentane predominantly follows an SN2 mechanism.II. The reaction between sodium hydroxide and 2-chloro-2-methylbutane predominantly follows an SN2 mechanism.III. The reaction of sodium hydroxide with 1-chloropentane occurs at a slower rate than with 1-bromopentane.

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	I and II only
B	I and III only
C	II and III only
D	I, II and III

Explanation:

Detailed explanation-1: -The SN2 reaction is a nucleophilic substitution reaction where a bond is broken and another is formed synchronously. Two reacting species are involved in the rate determining step of the reaction. The term ‘SN2’ stands for – Substitution Nucleophilic Bimolecular.

Detailed explanation-2: -Answer: D option is wrong. Explanation: is a bimolecular reaction which means two reactants are present.

Detailed explanation-3: -Chloromethane can also undergo a substitution reaction when reacted with sodium hydroxide. In this substitution reaction, the chlorine atom of chloromethane is replaced by a hydroxy group. The products of this reaction are methanol and sodium chloride.

Detailed explanation-4: -Substitution reaction is also known as single displacement reaction or single replacement reaction is a chemical reaction during which one functional group is replaced by another functional group in a chemical compound. Halogenation is a good example of a replacement reaction.

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