What is the role of metal or reagents written on arrows in the given chemical reaction?$\text{CH}_3\text{CH}_2\text{OH}\xrightarrow[\ \ \ \text{Heat}\ \ \ ]{\text{Alk. KMnO}_4}\text{CH}_3\text{COOH}$
What is the role of metal or reagents written on arrows in the given chemical reaction?$\text{CH}_3\text{COOH}+\text{CH}_3\text{CH}_2\text{OH}\xrightarrow{\ \ \text{Conc. H}_2\text{SO}_4\ \ \ }\text{CH}_3\text{COOC}_2\text{H}_5+\text{H}_2\text{O}$