Which one of the following methods will not give benzene?
Correct answer: B. Distilling phenol with Zn dust
- A. Heating sodium salt of benzoic acid with soda lime
- B. Distilling phenol with Zn dust
- C. Chlorobenzene with NaOH at 360°C & 150 atm.
- D. Hydrolysis of benzene sulfonic acid with superheated steam
Explanation
The mixture of catalysts Cr2O3 + Al2O3 + SiO2 is used when benzene is produced from acetylene at elevated temperatures (500°C).The mixture of catalysts Cr2O3 (chromium oxide), Al2O3 (aluminum oxide), and SiO2 (silicon dioxide) plays a crucial role in the production of benzene from acetylene at elevated temperatures, typically around 500°C. This process is known as the conversion of acetylene to benzene or the dehydrogenation of acetylene.Here's how the catalyst mixture functions in this chemical process:Dehydrogenation Reaction: The conversion of acetylene to benzene involves the removal of hydrogen atoms from the acetylene molecule, resulting in the formation of benzene. This reaction is endothermic, meaning it requires heat to proceed. The elevated temperature of around 500°C provides the necessary energy for the reaction to occur.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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