Water gas heated at 450°C and 200 atm pressure in the presence of ZnO+Cr₂O will produce:
Correct answer: B. Methanol
- A. Methanal
- B. Methanol
- C. Carbonic acid
- D. Methane
Explanation
Under the conditions of high temperature (450°C) and high pressure (200 atm) in the presence of a catalyst like ZnO+Cr₂O, water gas (a mixture of carbon monoxide, CO, and hydrogen, H2) could undergo various reactions.Given the conditions provided, one plausible reaction is the synthesis of methanol (CH3OH) from carbon monoxide and hydrogen:CO + 2H2 -> CH3OHMethanol synthesis is a significant industrial process, and it can occur in the presence of suitable catalysts like copper-based catalysts, rather than ZnO+Cr₂O.Therefore, the correct option from the provided list is:(b) Methanol
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Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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