What type of reaction is demonstrated by the process involving a carboxylic acid, an alcohol, and an acid that results in the formation of esters?
1. Reversible slow process
2. Irreversible fast process
3. Cyclic process
4. Adiabatic process

The below reaction is an example of

\(CH_{3}CH_{2}OH \ + \ CH_{3}COCl \xrightarrow[]{\textbf{Pyridine}} \)
\( CH_{3}COOC_{2}H_{5} \ + \ HCl\)

1. Acetylation

2. Benzoylation

3. Cross aldol condensation

4. Cross Cannizzaro reaction