![acid-hydrolysis hidrolisis-acida](/images/stories/organica-ii/amidas/hidrolisis-acida/hidrolisis-acida-01.png)
Ethanamide hydrolyzes in a sulfuric medium to form ethanoic acid .
The reaction mechanism occurs in the following steps:
Stage 1. Protonation of carbonyl oxygen.
![acid-hydrolysis hidrolisis-acida](/images/stories/organica-ii/amidas/hidrolisis-acida/hidrolisis-acida-02.png)
Stage 2. Nucleophilic attack of water on the carbonyl carbon
![acid-hydrolysis hidrolisis-acida](/images/stories/organica-ii/amidas/hidrolisis-acida/hidrolisis-acida-03.png)
Stage 3. Deprotonation of water and protonation of the amino group.
![acid-hydrolysis hidrolisis-acida](/images/stories/organica-ii/amidas/hidrolisis-acida/hidrolisis-acida-04.png)
Stage 4. Elimination of ammonia
![acid-hydrolysis hidrolisis-acida](/images/stories/organica-ii/amidas/hidrolisis-acida/hidrolisis-acida-05.png)
Step 5. Deprotonation of carbonyl oxygen
![acid-hydrolysis hidrolisis-acida](/images/stories/organica-ii/amidas/hidrolisis-acida/hidrolisis-acida-06.png)