COMEDK · Chemistry · 14. Hydrocarbons
Identify the reagents \(\mathrm{X}, \mathrm{Y}\) and \(\mathrm{Z}\) used to bring out the following reactions.
- A \(\mathrm{X}=\mathrm{H}_2 \mathrm{O}_2 \quad \mathrm{Y}=\text { Conc. } \mathrm{HCl} \quad \mathrm{Z}=\mathrm{O}_3\)
- B \(\mathrm{X}=\text { DIBAL- } \mathrm{H} \quad \mathrm{Y}=\text { Conc. } \mathrm{HNO}_3 \quad \mathrm{Z}=\mathrm{CrO}_2 \mathrm{Cl}_2\)
- C \(\mathrm{X}=\text { Air } \quad \mathrm{Y}=\text { dil. } \mathrm{H}_2 \mathrm{SO}_4 \quad \mathrm{Z}=\mathrm{Cr}_2 \mathrm{O}_7{ }^{2-} / \mathrm{H}^{+}\)
- D \(\mathrm{X}=\text { Alkaline } \mathrm{KMnO}_4 \quad \mathrm{Y}=\text { dil } \mathrm{HCl} \quad \mathrm{Z}=\mathrm{CrO}_3\)
Answer & Solution
Correct Answer
(C) \(\mathrm{X}=\text { Air } \quad \mathrm{Y}=\text { dil. } \mathrm{H}_2 \mathrm{SO}_4 \quad \mathrm{Z}=\mathrm{Cr}_2 \mathrm{O}_7{ }^{2-} / \mathrm{H}^{+}\)
Step-by-step Solution
Detailed explanation
The conversion of 2-phenylpropane (cumene) to phenol (\(C_6H_5OH\)) is a standard industrial process known as the cumene process. In this process, cumene is first oxidized to cumene hydroperoxide using air (or \(O_2\)), followed by acid-catalyzed cleavage using dilute…
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