Ester - Lipid - trung bình

Home Lớp 12 Hoá học Lớp 12 - Sách KNTT Bài 1: Ester - LipidBài tập trung bình

{"common":{"save":0,"post_id":"10058","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8857","post_id":"10058","mon_id":"1160346","chapter_id":"1158865","question":"Acid béo là<\/p>","options":["A. carboxylic acid \u0111a ch\u1ee9c.","B. carboxylic acid t\u1ea1p ch\u1ee9c.","C. carboxylic base \u0111a ch\u1ee9c.","D. carboxylic acid \u0111\u01a1n ch\u1ee9c."],"correct":"4","level":"2","hint":"Hãy nh\u1edb r\u1eb1ng acid béo có m\u1ed9t nhóm –COOH \u1edf \u0111\u1ea7u m\u1ea1ch, còn ph\u1ea7n còn l\u1ea1i là m\u1ea1ch hi\u0111rocacbon dài.<\/p>","answer":"\u0110áp án: D. carboxylic acid \u0111\u01a1n ch\u1ee9c.<\/strong><\/span><\/p>Gi\u1ea3i thích: Acid béo th\u01b0\u1eddng có m\u1ed9t nhóm –COOH<\/strong> (\u0111\u01a1n ch\u1ee9c) g\u1eafn v\u1edbi m\u1ea1ch hi\u0111rocacbon dài, có th\u1ec3 no ho\u1eb7c không no. Chúng không ch\u1ee9a thêm nhóm ch\u1ee9c khác nên không ph\u1ea3i t\u1ea1p ch\u1ee9c, và c\u0169ng không ph\u1ea3i \u0111a ch\u1ee9c.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-07 23:05:18","option_type":"txt","len":2},{"id":"8858","post_id":"10058","mon_id":"1160346","chapter_id":"1158865","question":"Khi th\u1ee7y phân b\u1ea5t kì m\u1ed9t ch\u1ea5t béo nào c\u0169ng luôn thu \u0111\u01b0\u1ee3c<\/p>","options":["A. palmitic acid.","B. glycerol.","C. stearic acid. ","D. oleic."],"correct":"2","level":"2","hint":"Hãy nh\u1edb ch\u1ea5t béo là trieste c\u1ee7a glycerol và các acid béo, khi th\u1ee7y phân thì s\u1ea3n ph\u1ea9m nào luôn có m\u1eb7t, b\u1ea5t k\u1ec3 acid béo \u0111i kèm.<\/p>","answer":"\u0110áp án: B. glycerol.<\/strong><\/span><\/p>Gi\u1ea3i thích: Ch\u1ea5t béo là trieste c\u1ee7a glycerol<\/strong> v\u1edbi 3 acid béo (có th\u1ec3 là no hay không no). Khi th\u1ee7y phân, luôn thu \u0111\u01b0\u1ee3c glycerol<\/strong> và các acid béo t\u01b0\u01a1ng \u1ee9ng (palmitic, stearic, oleic… tùy lo\u1ea1i ch\u1ea5t béo). Vì v\u1eady ch\u1ec9 glycerol<\/strong> là s\u1ea3n ph\u1ea9m ch\u1eafc ch\u1eafn.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-07 23:05:46","option_type":"txt","len":2},{"id":"8859","post_id":"10058","mon_id":"1160346","chapter_id":"1158865","question":"Methyl propionate là tên g\u1ecdi c\u1ee7a h\u1ee3p ch\u1ea5t nào sau \u0111ây?<\/p>","options":["A. HCOOC3H7.","B. C2H5COOCH3.","C. C3H7COOH. ","D. C2H5COO."],"correct":"2","level":"2","hint":"<ul> <li data-end=\"94\" data-start=\"14\">Tên g\u1ecdi este \u0111\u01b0\u1ee3c \u0111\u1ecdc theo: g\u1ed1c R’ (t\u1eeb ancol) + tên g\u1ed1c axit (\u0111uôi -at)<\/strong>.<\/p><\/li> <li data-end=\"203\" data-start=\"95\">"Methyl propionate" ngh\u0129a là: este t\u1ea1o t\u1eeb axit propionic (CH\u2083CH\u2082COOH)<\/strong> và ancol methanol (CH\u2083OH)<\/strong><\/p><\/li><\/ul>","answer":"\u0110áp án: B. C2H5COOCH3.<\/strong><\/span><\/p>Gi\u1ea3i thích: “Propionate” xu\u1ea5t phát t\u1eeb propanoic acid (C\u2082H\u2085COOH)<\/strong>, còn “methyl” ch\u1ec9 nhóm –CH\u2083<\/strong> g\u1eafn vào O. K\u1ebft h\u1ee3p l\u1ea1i t\u1ea1o ester C\u2082H\u2085COOCH\u2083 (methyl propionate)<\/strong>.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-07 23:06:15","option_type":"txt","len":1}]}