Haloalkanes

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Q1. What type of mechanism is involved in the reaction of tertiary haloalkanes with nucleophiles? (2020)

Solution:

Tertiary haloalkanes typically undergo the SN1 mechanism, which involves the formation of a carbocation intermediate.

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Q2. What type of mechanism is involved in the reaction of haloalkanes with strong nucleophiles? (2020)

Solution:

The reaction of haloalkanes with strong nucleophiles typically follows the SN2 mechanism, which involves a single concerted step.

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Q3. What type of reaction occurs when haloalkanes react with metals like zinc?

Solution:

The reaction of haloalkanes with metals like zinc is a reduction reaction, forming alkanes.

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Q4. What is the IUPAC name of CH3CH2Cl?

Solution:

The IUPAC name of CH3CH2Cl is Chloroethane, as it is a two-carbon alkane with a chlorine substituent.

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Q5. What is the main product when 1-bromobutane reacts with sodium hydroxide in ethanol? (2021)

Solution:

The reaction of 1-bromobutane with sodium hydroxide in ethanol leads to elimination, forming butene as the main product.

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Q6. What type of reaction occurs when haloalkanes react with aqueous KOH?

Solution:

Haloalkanes react with aqueous KOH primarily through nucleophilic substitution to form alcohols.

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Q7. What is the product formed when 1-bromopropane reacts with sodium hydroxide in ethanol? (2021)

Solution:

1-bromopropane reacts with sodium hydroxide in ethanol to form 1-propanol through a nucleophilic substitution reaction.

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Q8. Which of the following haloalkanes is expected to be the most reactive in nucleophilic substitution reactions? (2023)

Solution:

Iodoethane is the most reactive due to the weaker C-I bond compared to C-Br, C-Cl, and C-F bonds.

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Q9. Which reagent can be used to convert an alkyl halide to an alcohol?

Solution:

NaOH can be used to convert an alkyl halide to an alcohol through nucleophilic substitution.

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Q10. What is the expected major product when 2-bromobutane undergoes elimination reaction?

Solution:

The major product of the elimination reaction of 2-bromobutane is But-2-ene due to the formation of the more stable alkene.