Given below are two statements:
Statement I: The conversion proceeds well in a less polar medium. \[ {CH}_3{CH}_2{CH}_2{CH}_2{Cl} \xrightarrow{{HO}^-} {CH}_3{CH}_2{CH}_2{CH}_2{OH} + {Cl}^- \] Statement II: The conversion proceeds well in a more polar medium. \[ {CH}_3{CH}_2{CH}_2{CH}_2{Cl} \xrightarrow{{R}_3{N}} {CH}_3{CH}_2{CH}_2{CH}_2{NH}_2 + {Cl}^- \] In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements:
Statement I: The conversion proceeds well in a less polar medium. \[ {CH}_3{CH}_2{CH}_2{CH}_2{Cl} \xrightarrow{{HO}^-} {CH}_3{CH}_2{CH}_2{CH}_2{OH} + {Cl}^- \] Statement II: The conversion proceeds well in a more polar medium. \[ {CH}_3{CH}_2{CH}_2{CH}_2{Cl} \xrightarrow{{R}_3{N}} {CH}_3{CH}_2{CH}_2{CH}_2{NH}_2 + {Cl}^- \] In the light of the above statements, choose the correct answer from the options given below:
Show Hint
Both statement I and statement II are true
- Both statement I and statement II are false
- Statement I is false but statement II is true
- Statement I is true but statement II is false
The Correct Option is A
Approach Solution - 1
To evaluate the given statements about organic reactions involving conversion of \({CH}_3{CH}_2{CH}_2{CH}_2{Cl}\), let's examine each one:
-
Statement I: The conversion proceeds well in a less polar medium.
\[
{CH}_3{CH}_2{CH}_2{CH}_2{Cl} \xrightarrow{{HO}^-} {CH}_3{CH}_2{CH}_2{CH}_2{OH} + {Cl}^-
\]
- This reaction is a nucleophilic substitution reaction where hydroxide ion (\(HO^-\)) attacks the alkyl chloride to form butanol.
- In SN2 reactions like this one, less polar solvents are preferred because polar solvents can stabilize the nucleophile (here, \(HO^-\)), making it less reactive.
- Thus, Statement I is accurate as the reaction proceeds better in a less polar medium, supporting the SN2 mechanism.
-
Statement II: The conversion proceeds well in a more polar medium.
\[
{CH}_3{CH}_2{CH}_2{CH}_2{Cl} \xrightarrow{{R}_3{N}} {CH}_3{CH}_2{CH}_2{CH}_2{NH}_2 + {Cl}^-
\]
- This transformation involves an amine catalyst (\({R}_3N\)) facilitating the reaction.
- Polar solvents can stabilize the reactants and intermediates involving polar reactants, such as those with amines, which aids in the reaction progress.
- Hence, a more polar medium facilitates this reaction, making Statement II correct.
After understanding both reactions, we can conclude that:
Approach Solution -2
The correct graph shows the vapor pressure curve of the solution below that of the pure solvent, with the freezing point of the solution occurring at a lower temperature.
The correct representation is \( \text{Option (3)} \), where the freezing point depression (\( \Delta T_f \)) is clearly shown, with the solution curve below the solvent curve.
Thus, the correct answer is: \( \boxed{(3)} \).
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