<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Ukudlula: Ukuhlanganiswa kwe-aspirin kuhlukaniswa njengendlela yokusabela kwe-esterification. I-salicylic acid iphathwa nge-acetic anhydride, i-acid derivative, edala ukusabela kwamakhemikhali okuguqula iqembu le-hydroxyl le-salicylic acid libe yiqembu le-ester R-OH R-OCOCH3. Le nqubo ikhiqiza i - aspirin ne - acetic acid, okubhekwa njengomkhiqizo ovela kulokhu kuphenduka. Amanani amancane e-sulfuric acid futhi ngezikhathi ezithile i-phosphoric acid cishe njalo asetshenziswa njenge-catalyst. Le ndlela ivame ukusetshenziswa kumalabhorethri okufundisa asezingeni eliphansi. Umbuzo: Isetshenziswa kuphi i - sulfuric acid?  <response>: isishukumisi 