WBJEE · Chemistry · Carboxylic Acid Derivatives
For the above three esters, the order of rates of alkaline hydrolysis is
- A \(|>||>|||\)
- B \(\|>\||>|\)
- C \(|>|||>\|\)
- D \(|\|>\mid>\|\)
Answer & Solution
Correct Answer
(C) \(|>|||>\|\)
Step-by-step Solution
Detailed explanation
Hint: Alkaline hydrolysis is a nucleophilic substitution reaction on ester. Hence, presence of electron withdrawing group promotes nucleophilic attack \(-\mathrm{NO}_{2} \quad-\mathrm{R}\) and \(-\mathrm{I}\) \(-\mathrm{OMe} \quad+\mathrm{R},-\mathrm{I}\) \(-\) Me \(\quad\) + I…
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
- \(\stackrel{\mathrm{L}}{=}~\xrightarrow [\text { (ii) } \mathrm{H}_3 \mathrm{O}^{\oplus}]{\text { (i) } \mathrm{PhMgBr}}\stackrel{\mathrm{M}}{=}~\xrightarrow []{\mathrm{CrO}_3 / \mathrm{H}^{\oplus}}\stackrel{\mathrm{N}}{=}~\xrightarrow []{\mathrm{Ph}_3 \mathrm{P}=\mathrm{CH}_2}\mathrm{Ph}_2 \mathrm{C}= \mathrm{CH}_2\)
"L" in the above sequence of reaction is/are (where \(L \neq M \neq N\))WBJEE 2023 Hard - What type of orbital hybridisation is considered on \(\mathrm{P}\) in \(\mathrm{PCl}_5\) ?WBJEE 2010 Easy
- To a solution of colourless sodium salt, a solution of lead nitrate was added to have a white precipitate which dissolves in warm water and reprecipitates on cooling. Which of the following acid radical is present in the salt?WBJEE 2022 Hard
- At temperature of \(298 \mathrm{K}\), the emf of the following electrochemical cell. \(\mathrm{Ag}(\mathrm{s})\left|\mathrm{Ag}^{+*}(0.1 \mathrm{M}) \| \mathrm{Zn}^{2 +}(0.1 \mathrm{M})\right| \mathrm{Zn}(\mathrm{s})\) will be (Given, \(E^{\prime \prime}\) call \(=-1.562 \mathrm{V}\) )WBJEE 2015 Medium
- Given that \(\begin{array}{c} \mathrm{C}+\mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2} ; \Delta H^{\circ}=-x \mathrm{k} \mathrm{J} \\ 2 \mathrm{CO}+\mathrm{O}_{2} \longrightarrow 2 \mathrm{CO}_{2} ; \Delta H^{\circ}=-y \mathrm{k} \mathrm{J}\end{array}\). The heat of formation of carbon monoxide will beWBJEE 2014 Medium
- Assuming the compounds to be completely dissociated in aqueous solution, identify the pair of the solutions that can be expected to be isotonic at the same temperature.WBJEE 2017 Medium
More PYQs from WBJEE
- Let \(f: R \rightarrow R\) be defined as \(f(x)=\frac{x^{2}-x+4}{x^{2}+x+4}\). Then, range of the function \(f(x)\) isWBJEE 2015 Medium
- \(\int \frac{\mathrm{f}(\mathrm{x}) \varphi^{\prime}(\mathrm{x})+\varphi(\mathrm{x}) \mathrm{f}^{\prime}(\mathrm{x})}{(\mathrm{f}(\mathrm{x}) \varphi(\mathrm{x})+1) \sqrt{\mathrm{f}(\mathrm{x}) \varphi(\mathrm{x})-1}} \mathrm{dx}=\)WBJEE 2020 Medium
- The total number of isomeric linear dipeptides which can be synthesised from racemic alanine isWBJEE 2019 Hard
- If \(|z|=1\) and \(z \neq \pm 1\), then all the points representing \(\frac{z}{1-z^{2}}\) lie on;WBJEE 2021 Medium
- To determine the coefficient of friction between a rough surface and a block, the surface is kept inclined at \(45^{\circ}\) and the block is released from rest. The block takes a time \(t\) in moving a distance \(d\). The rough surface is then replaced by a smooth surface and the same experiment is repeated. The block now takes a time \(t / 2\) in moving down the same distance d. The coefficient of friction isWBJEE 2014 Medium
- A box of mass \(2 \mathrm{kg}\) is placed on the roof of a car. The box would remain stationary until the car attains a maximum acceleration. Coefficient of static friction between the box and the roof of the car is 0.2 and \(g=10 \mathrm{ms}^{-2}\) This maximum acceleration of the car, for the box to remain stationary, isWBJEE 2012 Medium