Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: Ko te whakahiato o te aspirin e whakarōpūtia ana hei urupare esterification. Ko te waikawa salicylic ka maimoatia ki te waikawa acetic, he hua waikawa, ka puta he urupare matū e huri ana i te roopu hydroxyl o te waikawa salicylic ki te roopu ester (R-OH → R-OCOCH3). Ko tēnei tukanga e hua ai te aspirin me te waikawa acetic, e kiia ana he hua o tēnei tauhohenga. He iti te nui o te waikawa sulfuric (me te waikawa phosphoric i etahi wa) ka whakamahia i nga wa katoa hei kaiwhakangungu. Ko tēnei aratuka e whakamahia nuitia ana i roto i ngā taiwhanga whakaako paetahi.  Patai: He aha te waikawa konupora e whakamahia ana?
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