BMAT 700 Q2.143 (Chemistry)

I understand why II is correct but I’m not sure why I is correct. Is it because acids are often in aqueous solution? The answer is A. Thanks in advance!

In which of the following reactions is water a product?
I. Ethanol + Oxygen to give ethanoic acid
II. Combustion of ethanol
III. Fermentation of glucose

A. I and II only
B. I and III only
C. II and III only
D. All three reactions
E. None of the above


I think that if they don’t specify the type of reaction in I. we should assume they mean spontaneous reaction with air, does everyone agree with this?
so C2H5OH + 6O2 ---- 2CO2 + 3H2O

Hope this helps!


Oh I’m sorry I forgot to write the rest of reaction I it’s actually ethanol + oxygen to give ethanoic acid

1 Like

hey ,
actually I think it is C2H5OH + O2 ___CH3COOH +H2O

Hey guys,

so from what Ive found, the oxidation of ethanol (primary alcohol) gives aldehyde and water. When oxidising the aldehyde further, given that the reactants remain in the “oxidising” container, we form ethanoic acid. Thus, the overall products will be ethanoic acid and water from previous oxidation. Hope this makes sense:)