Respuesta :
Answer:
The correct option is: (A) Ketones cannot be oxidized further
Explanation:
Oxidation refers to the gain of oxygen or the formation of carbon-oxygen bond (C-O bond).
Alcohols are organic compounds containing at least one hydroxyl group. These compounds can be further classified into primary (R-CH₂-OH), secondary (R¹R²CH-OH) and tertiary alcohols (R¹R²R³C-OH).
- The partial oxidation of primary alcohol gives aldehyde (R-CHO). Further oxidation of aldehyds gives carboxylic acid (R-COOH). Primary alcohol can also be oxidized directly to carboxylic acid. However, the carboxylic acid can not be further oxidized.
[tex]R-CH_{2}-OH \overset{[O]}{\rightarrow} R-CHO \overset{[O]}{\rightarrow} R-COOH \\R-CH_{2}-OH \overset{[O]}{\rightarrow} R-COOH[/tex]
- Oxidation of secondary alcohols gives ketones (R¹R²C=O), which can not be oxidized further.
[tex]R^{1}R^{2}CH-OH \overset{[O]}{\rightarrow} R^{1}R^{2}C=O[/tex]
- Whereas, tertiary alcohols are resistant to oxidation.
Therefore, the correct statement regarding oxidation is (A) Ketones cannot be oxidized further.
