{"common":{"save":0,"post_id":"10057","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8847","post_id":"10057","mon_id":"1160346","chapter_id":"1158865","question":"<p data-pm-slice=\"0 0 []\">H\u1ee3p ch\u1ea5t nào sau \u0111ây là ester?<\/p>","options":["A. CH\u2083CH\u2082Cl","B. HCOOC\u2086H\u2085","C. CH\u2083CH\u2082NO\u2083","D. C\u2082H\u2085COOH"],"correct":"2","level":"1","hint":"<p>Ester là h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 có nhóm ch\u1ee9c –COO– n\u1eb1m gi\u1eefa hai g\u1ed1c h\u1eefu c\u01a1. Hãy tìm ch\u1ea5t có \u0111\u1eb7c \u0111i\u1ec3m này.<\/p>","answer":"<p>\u0110áp án: <strong><span style=\"color:#16a085;\">B. HCOOC\u2086H\u2085<\/span><\/strong><\/p><p>Trong phân t\u1eed HCOOC\u2086H\u2085 có nhóm ch\u1ee9c –COO– liên k\u1ebft gi\u1eefa g\u1ed1c HCO– và g\u1ed1c phenyl (C\u2086H\u2085–). \u0110ây chính là c\u1ea5u t\u1ea1o \u0111i\u1ec3n hình c\u1ee7a m\u1ed9t ester.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-07 17:15:11","option_type":"txt","len":1},{"id":"8848","post_id":"10057","mon_id":"1160346","chapter_id":"1158865","question":"<p data-pm-slice=\"0 0 []\">Trong môi tr\u01b0\u1eddng acid ho\u1eb7c môi tr\u01b0\u1eddng base, ester b\u1ecb<\/p>","options":["A. cháy.","B. \u0111óng r\u1eafn.","C. th\u1ee7y phân. ","D. phân h\u1ee7y."],"correct":"3","level":"1","hint":"<p>Ester khi g\u1eb7p axit hay ki\u1ec1m s\u1ebd x\u1ea3y ra ph\u1ea3n \u1ee9ng \u0111\u1eb7c tr\u01b0ng, t\u1ea1o thành axit và r\u01b0\u1ee3u (ho\u1eb7c mu\u1ed1i và r\u01b0\u1ee3u).<\/p>","answer":"<p>\u0110áp án: <span style=\"color:#16a085;\"><strong>C. th\u1ee7y phân.<\/strong><\/span><\/p><p data-end=\"228\" data-start=\"127\">Ester b\u1ec1n v\u1edbi nhi\u1ec7t nh\u01b0ng \u0111\u1eb7c tr\u01b0ng d\u1ec5 b\u1ecb th\u1ee7y phân:<\/p><ul data-end=\"355\" data-start=\"229\"> <li data-end=\"284\" data-start=\"229\"><p data-end=\"284\" data-start=\"231\">Trong môi tr\u01b0\u1eddng axit: t\u1ea1o axit cacboxylic + ancol.<\/p><\/li> <li data-end=\"355\" data-start=\"285\"><p data-end=\"355\" data-start=\"287\">Trong môi tr\u01b0\u1eddng ki\u1ec1m: t\u1ea1o mu\u1ed1i cacboxylat + ancol (xà phòng hóa).<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-07 17:17:04","option_type":"txt","len":2},{"id":"8849","post_id":"10057","mon_id":"1160346","chapter_id":"1158865","question":"<p data-pm-slice=\"0 0 []\">S\u1ea3n ph\u1ea9m c\u1ee7a ph\u1ea3n \u1ee9ng th\u1ee7y phân ester trong môi tr\u01b0\u1eddng base là<\/p>","options":["A. ester m\u1edbi.","B. mu\u1ed1i carboxylate và alcohol.","C. mu\u1ed1i chloride và kim lo\u1ea1i. ","D. carboxylic acid và alkene."],"correct":"2","level":"1","hint":"<p>Hãy nh\u1edb l\u1ea1i ph\u1ea3n \u1ee9ng xà phòng hóa (th\u1ee7y phân ester trong môi tr\u01b0\u1eddng ki\u1ec1m) th\u01b0\u1eddng t\u1ea1o ra nh\u1eefng ch\u1ea5t nào.<\/p>","answer":"<p>\u0110áp án: <span style=\"color:#16a085;\"><strong>B. mu\u1ed1i carboxylate và alcohol.<\/strong><\/span><\/p><p>Gi\u1ea3i thích: Khi th\u1ee7y phân ester trong môi tr\u01b0\u1eddng base (NaOH\/KOH), liên k\u1ebft ester b\u1ecb c\u1eaft, nhóm –COOR bi\u1ebfn thành mu\u1ed1i carboxylate, còn nhóm –OR’ tách ra thành alcohol. Ph\u1ea3n \u1ee9ng này g\u1ecdi là ph\u1ea3n \u1ee9ng xà phòng hóa.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-07 23:00:09","option_type":"txt","len":2}]}