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# Benzoic acid from benzyl alcohol? Watch

1. What is the equation for the oxidation of benzyl alcohol to form benzoic acid? My teacher has given an incomplete equation on the answer sheet

Thanks
2. (Original post by Nerdatious)
What is the equation for the oxidation of benzyl alcohol to form benzoic acid? My teacher has given an incomplete equation on the answer sheet

Thanks
Does your exam board wants an answer in terms of [O], which represents oxidation in an equation OR do you need to write permanganate ions?
3. (Original post by Zishi)
Does your exam board wants an answer in terms of [O], which represents oxidation in an equation OR do you need to write permanganate ions?
4. (Original post by Nerdatious)
Alright, C6H5CH2OH + 2[O] → C6H5COOH + H2O
5. (Original post by Zishi)
Alright, C6H5CH2OH + 2[O] → C6H5COOH + H2O
Thank you! I thought it had 2[O] as is the case with oxidising aliphatic alcohols but my teacher had just put the one so I thought that they had made a mistake!

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6. (Original post by Nerdatious)
Thank you! I thought it had 2[O] as is the case with oxidising aliphatic alcohols but my teacher had just put the one so I thought that they had made a mistake!

I've run out of rep for today but I'll rep you tomorrow!
The first equivalent of oxidising agent turns it into benzaldehyde, which then forms the hydrate in the presence of water, which is then oxidised to the acid.
7. we can understand that benzyl alcohol will be a primary alcohol so therefore you will use reflux and H2SO4 to form an carboylic acid.
8. (Original post by kurdishboy94)
we can understand that benzyl alcohol will be a primary alcohol so therefore you will use reflux and H2SO4 to form an carboylic acid.

Primary alcohol ----> Carboxylic acid: K2Cr2O7 + dilute H2SO4 + reflux

Updated: June 4, 2012
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