Question

Consider the above sequence and answer the following

Conversion $R-CHO\to R-C{O}_{2}H$ can be done by :

• A. $KMN{O}_4$
• B. $H_{2}Cr{O}_4$
• C. $K_{2}C{r}_2{O}_7$
• D. All of these

Answer 1

The correct option is D All of these

Strong oxidizing agents like alkaline $KMn{O}_4$, $H_{2}Cr{O}_4$ and acidified $K_{2}C{r}_2{O}_7$ can oxidize aldehyde group to carboxylic acid and alcohol group to carboxylic group.

(i) $R-CHO\stackrel{Alk.KMn{O}_4}{\to }R-COOH$

(ii) $R-CHO\stackrel{H_{2}Cr{O}_4}{\to }R-COOH$

(iii) $R-CHO\stackrel{K_{2}C{r}_2{O}_7}{\to }R-COOH$