AP EAMCET · Chemistry · Alcohols Phenols and Ethers
What are \(X, Y, Z\) in the following reactions?
\(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH} \xrightarrow{Y} \mathrm{CH}_2=\mathrm{CH}_2+\mathrm{H}_2 \mathrm{O}\)
- A \(\begin{array}{|c|c|c|} \hline X & Y & Z \\ \hline \mathrm{H}_2 \mathrm{SO}_4, 443 \mathrm{~K} & \begin{array}{l} 85 \% \mathrm{H}_3 \mathrm{PO}_4 \\ 440 \mathrm{~K} \end{array} & \begin{array}{l} 20 \% \mathrm{H}_3 \mathrm{PO}_4, \\ 358 \mathrm{~K} \end{array} \\ \hline \end{array}\)
- B \(\begin{array}{|c|c|c|} \hline X & Y & Z \\ \hline \begin{array}{l} 85 \% \mathrm{H}_3 \mathrm{PO}_4 \\ 440 \mathrm{~K} \end{array} & \mathrm{H}_2 \mathrm{SO}_4, 443 \mathrm{~K} & \begin{array}{l} 20 \% \mathrm{H}_3 \mathrm{PO}_4 \\ 358 \mathrm{~K} \end{array} \\ \hline \end{array}\)
- C \(\begin{array}{|c|c|c|} \hline X & Y & Z \\ \hline \begin{array}{l} 20 \% \mathrm{H}_3 \mathrm{PO}_4, \\ 358 \mathrm{~K} \end{array} & \mathrm{H}_2 \mathrm{SO}_4, 443 \mathrm{~K} & \begin{array}{l} 85 \% \mathrm{H}_3 \mathrm{PO}_4, \\ 440 \mathrm{~K} \end{array} \\ \hline \end{array}\)
- D \(\begin{array}{|c|c|c|} \hline X & Y & Z \\ \hline \mathrm{H}_2 \mathrm{SO}_4, 443 \mathrm{~K} & \begin{array}{l} 20 \% \mathrm{H}_3 \mathrm{PO}_4, \\ 358 \mathrm{~K} \end{array} & \begin{array}{l} 85 \% \mathrm{H}_3 \mathrm{PO}_4 \text {, } \\ 440 \mathrm{~K} \end{array} \\ \hline \end{array}\)
Answer & Solution
Correct Answer
(B) \(\begin{array}{|c|c|c|} \hline X & Y & Z \\ \hline \begin{array}{l} 85 \% \mathrm{H}_3 \mathrm{PO}_4 \\ 440 \mathrm{~K} \end{array} & \mathrm{H}_2 \mathrm{SO}_4, 443 \mathrm{~K} & \begin{array}{l} 20 \% \mathrm{H}_3 \mathrm{PO}_4 \\ 358 \mathrm{~K} \end{array} \\ \hline \end{array}\)
Step-by-step Solution
Detailed explanation
These reactions are known as dehydration reactions where \(\mathrm{H}_3 \mathrm{PO}_4\) and \(\mathrm{H}_2 \mathrm{SO}_4\) are dehydrating agents. Ethanol undergo dehydration by heating with conc. \(\mathrm{H}_2 \mathrm{SO}_4\) at \(443 \mathrm{~K}\) whereas \(2^{\circ}\)…
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
- The half-life periods of a first order reaction at \(300 \mathrm{~K}\) and \(400 \mathrm{~K}\) are \(50 \mathrm{~s}\) and \(10 \mathrm{~s}\) respectively. The activation energy of the reaction in \(\mathrm{kJ} \mathrm{mol}^{-1}\) is \((\log 5=0.70)\)AP EAMCET 2021 Medium
- An oxide of chlorine with water gives the strongest acid. The ratio of chlorine and oxygen in its formula isAP EAMCET 2023 Medium
- Which of the following molecules is eliminated during peptide bond formation?AP EAMCET 2022 Easy
- What is A in the following reaction?
\(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CN} \xrightarrow[\text { 2) } \mathrm{H}_2 \mathrm{O}]{\text { 1) } \mathrm{A} \ell \mathrm{H}(\mathrm{i}-\mathrm{Bu})_2}(\mathrm{~A})\)AP EAMCET 2025 Medium - The de Broglie wavelength of a particle of mass 1 mg moving with a velocity of \(10 \mathrm{~ms}^{-1}\) is (\(h=6.63 \times 10^{-34} \mathrm{~J} \mathrm{~s}\))AP EAMCET 2024 Easy
- The spectral series formed when electrons of excited hydrogen atoms return to the third orbit from higher energy orbits isAP EAMCET 2022 Easy
More PYQs from AP EAMCET
- If \(f(x)\) is a polynomial function satisfying \(f(x) \cdot f\left(\frac{1}{x}\right)=f(x)+f\left(\frac{1}{x}\right)\) and \(f(4)=257\), then \(f(3)=\)AP EAMCET 2018 Medium
- In Fraunhofer diffraction experiment, \(L\) is the distance between screen and the obstacle, \(b\) is the size of obstacle and \(\lambda\) is wavelength of incident light. The general condition for the applicability of Fraunhofer diffraction isAP EAMCET 2008 Easy
- A lorry is moving on a smooth circular path of radius 50 \(\mathrm{m}\) with a velocity of \(20 \mathrm{~ms}^{-1}\). Then the banking angle of the road is
(Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )AP EAMCET 2023 Easy - The locus of the incentre of the triangle formed by the lines \(x y-4 x-4 y+16=0\) and \(x+y=5\) isAP EAMCET 2022 Medium
- \(2 \operatorname{coth} h^{-1}(4)+\sec h^{-1}\left(\frac{3}{5}\right)=\)AP EAMCET 2024 Easy
- If \(\log y\) is an integrating factor of \(\frac{d x}{d y}+P(y) x=Q(y)\), then \(\mathrm{P}(\mathrm{y})=\)AP EAMCET 2023 Easy