COMEDK · Chemistry · 25. Haloalkanes and Haloarenes
Arrange the following compounds in the increasing order towards \(\mathrm{S}_{\mathrm{N}} 1\) reactions.
- A IV \( <\) II \( <\) I \( <\) III
- B I \( <\) III \( <\) II \( <\) IV
- C IV \( <\) III \( <\) II \( <\) I
- D I \( <\) II \( <\) III \( <\) IV
Answer & Solution
Correct Answer
(B) I \( <\) III \( <\) II \( <\) IV
Step-by-step Solution
Detailed explanation
The rate of an \(S_{N}1\) reaction depends on the stability of the carbocation intermediate formed after the departure of the leaving group (bromide ion). The more stable the carbocation, the faster the \(S_{N}1\) reaction. The carbocations formed from the given compounds are:…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- In the estimation of element \(\mathrm{X}\) in an organic compound, \(0.8 \mathrm{~g}\) of the compound containing \(\mathrm{X}\) was heated with fuming \(\mathrm{HNO}_3\) and the cooled product was treated with barium chloride. The mass of barium sulphate precipitated was \(1.2 \mathrm{~g}\). What is the percentage of element \(\mathrm{X}\) and what is the formula of the violet-coloured compound formed when Lassaigne's extract of the organic compound is treated with sodium nitroprusside?COMEDK 2024 Medium
- Which of the following equations give ionic product of water?
I. \(\mathrm{NH}_{3}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{NH}_{4}^{+}(a q)+\mathrm{OH}^{-}(a q)\)
II. \(\mathrm{NH}_{4}^{+}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{NH}_{3}(g)\)
III. \(\mathrm{NH}_{2}^{-}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{NH}_{3}(g)+\mathrm{OH}^{-}(a q)\)
IV. \(\mathrm{NH}_{3}(g)+\mathrm{OH}^{-}(a q) \rightleftharpoons \mathrm{NH}_{2}^{-}(a q)+\mathrm{H}_{2} \mathrm{O}\)COMEDK 2015 Medium - Among the alkali metals caesium is the most reactive becauseCOMEDK 2018 Medium
- A reaction between a carbonyl compound and a Grignard reagent is termed asCOMEDK 2014 Easy
- Molar conductance of a complex of cobalt is zero. Then its structure would beCOMEDK 2014 Medium
- What is the reduction potential of a half-cell consisting of a Pt electrode dipped in \(2.2 \mathrm{M} \mathrm{Fe}^{2+}\) and \(0.04 \mathrm{M} \mathrm{Fe}^{3+}\) solution where the reaction taking place is conversion of \(\mathrm{Fe}^{3+}\) ions to \(\mathrm{Fe}^{2+}\) ?
\(\mathrm{E}^0\left(\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}\right)=0.771 \mathrm{~V}\)COMEDK 2025 Medium
More PYQs from COMEDK
- T. The angles \(A, B\) and \(C\) of a \(\triangle A B C\) are in A.P. If \(b: c=\sqrt{3}: \sqrt{2}\), then the angle \(A\) isCOMEDK 2019 Medium
- A given mass of a hydrocarbon on complete combustion produced \(176 \mathrm{~g}\) of \(\mathrm{CO}_2\) and \(90 \mathrm{~g}\) of \(\mathrm{H}_2 \mathrm{O}\). What is the Molecular formula of the compound?COMEDK 2024 Medium
- Methyl bromide is converted into ethane by heating it in ether medium withCOMEDK 2018 Easy
- Which of the following noble gases has the highest van der Waals' force of attraction?COMEDK 2012 Medium
- When \(9.2 \times 10^{-3} \mathrm{~kg}\) of formic acid is added to 600 ml of water the freezing point of water is depressed. If \(30 \%\) of Formic acid undergoes dissociation what would be the freezing point of the solution? ( \(\mathrm{K}_{\mathrm{f}}\) of \(\mathrm{H}_2 \mathrm{O}\) is \(1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol} ; \mathrm{MM}\) of formic acid: 46 amu )COMEDK 2025 Medium
- If \(S_{n}=\frac{1}{6 \cdot 11}+\frac{1}{11 \cdot 16}+\frac{1}{16 \cdot 21}+\ldots\) to \(n\) terms, then \(6 S_{n}=\)COMEDK 2016 Hard