AP EAMCET · Chemistry · Hydrocarbons
The correct order of acidic nature of the following alkynes is
I. \(\mathrm{C}_2 \mathrm{H}_2 \quad\) II. \(\quad\left(\mathrm{CH}_3\right)_2 \mathrm{C}_2\)
III. \(\left(\mathrm{CH}_3\right) \mathrm{C}_2 \mathrm{H}\)
- A I \( < \) III \( < \) II
- B II \( < \) III \( < \) I
- C III \( < \) II \( < \) I
- D II \( < \) I \( < \) III
Answer & Solution
Correct Answer
(B) II \( < \) III \( < \) I
Step-by-step Solution
Detailed explanation
Due to the \((+\mathrm{R})\) effect of methyl group the stability of conjugate bases decreases from (III) to (II): \(\therefore\) Correct order of acidity : (II) \( < \) (III) \( < \) (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
- Assertion (A) K, Rb and Cs form superoxides.
Reason (R) The stability of the superoxides increases from ' \(\mathrm{K}\) ' to ' \(\mathrm{Cs}\) ' due to decrease in lattice energy.
The correct answer isAP EAMCET 2009 Easy - What are \(\underline{A}, \underline{B}, \underline{C}\) in the following reactions?
(I) \(\left(\mathrm{CH}_3 \mathrm{CO}_2\right)_2 \mathrm{Ca} \stackrel{\Delta}{\longrightarrow} \underline{A}\)
(II) \(\mathrm{CH}_3 \mathrm{CO}_2 \mathrm{H} \underset{\operatorname{Red~P}}{\stackrel{\mathrm{HI}}{\longrightarrow}}\)
(III) \(2 \mathrm{CH}_3 \mathrm{CO}_2 \mathrm{H} \stackrel{\mathrm{P}_4 \mathrm{O}_{10}}{\longrightarrow} \underline{\mathrm{C}}\)
\(\underline{A} \quad \underline{B} \quad \underline{C}\)AP EAMCET 2009 Easy - Assertion (A) : Blood cells collapse when suspended in saline water Reason (R): Cell membrane dissolves in saline waterAP EAMCET 2022 Easy
- Which of the following represents correct order of oxidising power of halogens with water?AP EAMCET 2022 Easy
- An element crystallizes in bcc lattice. The atomic radius of the element is \(2.598 Å\). What is the volume (in \(\mathrm{cm}^3\)) of one unit cell?AP EAMCET 2025 Medium
- and are two covalent molecules in which the hybridization of the central atoms is the same, but the shapes are different. What are and ?AP EAMCET 2018 Medium
More PYQs from AP EAMCET
- The set \(\left\{x \in \mathbb{R}: 16\left(2^X\right)>16^{\frac{-1}{x}}\right\}=\)AP EAMCET 2023 Easy
- A \(1 \mathrm{~kg}\) ball moving with a speed of \(6 \mathrm{~ms}^{-1}\) collides headon with a \(0.5 \mathrm{~kg}\) ball moving in the opposite direction with a speed of \(9 \mathrm{~ms}^{-1}\). If the coefficient of restitution is \(\frac{1}{3}\), then the energy lost in the collision isAP EAMCET 2016 Hard
- If \(r=\) in radius, \(\triangle=\) Area of \(\triangle A B C, s=\) semi-perimeter then which of the following is true?AP EAMCET 2020 Medium
- The current gain of a transistor in common emitter configuration is 80 . The resistances in collector and base sides of the circuit are \(5 \Omega\) and \(1 \mathrm{k} \Omega\) respectively. If the input voltage is 2 mV , the output voltage isAP EAMCET 2024 Easy
- The displacement of a body when it covers a distance of \(C / 4\) (where, \(C\) is circumference) along the circumference of the circle of radius \(r\) with a uniform speed \(u\) isAP EAMCET 2020 Medium
- Angle between the planes \(\vec{r} \cdot(2 \hat{i}+4 \hat{j}-3 \hat{k})=5\) and \(\vec{r} \cdot(5 \hat{i}+3 \hat{j}+4 \hat{k})=7\) isAP EAMCET 2024 Easy