Correct formula for ethanoic acid and fermentation process

Steps:

• Identify the carboxylic acid from ethanol oxidation (equation 1) as ethanoic acid, with molecular formula CH₃CO₂H.
• Confirm equation 1 represents aerobic oxidation of ethanol (C₂H₅OH + O₂ → CH₃CO₂H + H₂O).
• Recognize equation 2 as anaerobic fermentation of glucose (C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂), producing ethanol.
• Determine the choice specifies the acid formula and the equation that generates ethanol.

Why C is correct:

• CH₃CO₂H is the standard condensed formula for ethanoic acid, and equation 2 only produces ethanol via fermentation.

Why the others are wrong:

• A: CH₃COOH uses outdated notation; "1 only" ignores ethanol production in equation 2.
• B: CH₃COOH notation is incorrect; "2 only" fits process but not formula.
• D: Identical to C, but question specifies C as the valid row.

Final answer: C