Alcohol - nâng cao

Home Lớp 11 Hoá học Lớp 11 - Sách Kết nối tri thức Bài 20: AlcoholBài tập nâng cao

{"common":{"save":0,"post_id":"9680","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8403","post_id":"9680","mon_id":"1159892","chapter_id":"1160172","question":"Khi tách n\u01b0\u1edbc t\u1eeb alcohol 3-methylbutan-2-ol, s\u1ea3n ph\u1ea9m chính thu \u0111\u01b0\u1ee3c là<\/p>","options":["A. 3-methylbut-2-ene.","B. 3-methylbut-1-ene.","C. 2-methylbut-2-ene.","D. 2-methylbut-3-ene."],"correct":"3","level":"3","hint":"","answer":"\u0110áp án: C. 2-methylbut-2-ene.<\/strong><\/p>Tách n\u01b0\u1edbc t\u1eeb 3-methylbutan-2-ol<\/strong> t\u1ea1o s\u1ea3n ph\u1ea9m chính theo quy t\u1eafc Zaitsev<\/strong> → t\u1ea1o alkene b\u1ec1n nh\u1ea5t<\/strong> (liên k\u1ebft \u0111ôi gi\u1eefa các C b\u1eadc cao).<\/p>CH3–CH(CH3)–CH(OH)–CH3<\/p>→ Tách n\u01b0\u1edbc → t\u1ea1o liên k\u1ebft \u0111ôi gi\u1eefa C2 và C3 → s\u1ea3n ph\u1ea9m: CH3–C(CH3)=CH–CH3<\/strong> → 2-methylbut-2-ene<\/strong><\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-07-18 10:42:27","option_type":"txt","len":2},{"id":"8404","post_id":"9680","mon_id":"1159892","chapter_id":"1160172","question":"Tên g\u1ecdi c\u1ee7a alkene (s\u1ea3n ph\u1ea9m chính) thu \u0111\u01b0\u1ee3c khi \u0111un nóng alcohol có công th\u1ee9c (CH3)2CHCH(OH)CH3 v\u1edbi dung d\u1ecbch H2SO4 \u0111\u1eb7c là<\/p>","options":["A. 3-methylbut-2-ene.","B. 2-methylbut-1-ene. ","C. 2-methylbut-2-ene.","D. 3-methylbut-1-ene."],"correct":"3","level":"3","hint":"","answer":"\u0110áp án: C. 2-methylbut-2-ene.<\/strong><\/p>Có 2 s\u1ea3n ph\u1ea9m có th\u1ec3:<\/p><ul data-end=\"395\" data-start=\"245\"> <li data-end=\"309\" data-start=\"245\">3-methylbut-1-ene<\/strong> (liên k\u1ebft \u0111ôi gi\u1eefa C1–C2) → ít b\u1ec1n h\u01a1n<\/p><\/li> <li data-end=\"395\" data-start=\"310\">2-methylbut-2-ene<\/strong> (liên k\u1ebft \u0111ôi gi\u1eefa C2–C3, c\u1ea3 hai C \u0111\u1ec1u b\u1eadc cao) → b\u1ec1n h\u01a1n<\/strong><\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-07-18 10:45:12","option_type":"txt","len":2},{"id":"8405","post_id":"9680","mon_id":"1159892","chapter_id":"1160172","question":"Hydrate hóa 2-methylbut-2-ene (\u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9, xúc tác thích h\u1ee3p) thu \u0111\u01b0\u1ee3c s\u1ea3n ph\u1ea9m chính là<\/p>","options":["A. 2-metybutan-2-ol.","B. 3-metybutan-2-ol. ","C. 3-methylbutan-1-ol.","D. 2-methylbutan-3-ol."],"correct":"1","level":"3","hint":"","answer":"\u0110áp án: A. 2-metybutan-2-ol.<\/strong><\/p>Hydrat hóa 2-methylbut-2-ene<\/strong> (H\u2082O\/H\u207a) → c\u1ed9ng theo quy t\u1eafc Markovnikov<\/strong>:<\/p><ul data-end=\"148\" data-start=\"81\"> <li data-end=\"115\" data-start=\"81\">OH<\/strong> g\u1eafn vào C b\u1eadc cao (C2),<\/p><\/li> <li data-end=\"148\" data-start=\"116\">H<\/strong> g\u1eafn vào C b\u1eadc th\u1ea5p (C3).<\/p><\/li><\/ul>\\n→ T\u1ea1o ra 2-methylbutan-2-ol<\/strong><\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-07-18 10:45:52","option_type":"txt","len":2}]}