Carboxylic acid - nâng cao

Home Lớp 11 Hoá học Lớp 11 - Sách Kết nối tri thức Bài 24: Carboxylic acidBài tập nâng cao

{"common":{"save":0,"post_id":"9785","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8534","post_id":"9785","mon_id":"1159892","chapter_id":"1160178","question":"Dung d\u1ecbch acetic acid không ph\u1ea3n \u1ee9ng \u0111\u01b0\u1ee3c v\u1edbi<\/p>","options":["A. Mg","B. NaOH","C. NaHCO3 ","D. NaNO3"],"correct":"4","level":"3","hint":"Xem l\u1ea1i tính axit y\u1ebfu c\u1ee7a acetic acid \u0111\u1ec3 lo\u1ea1i các ch\u1ea5t không ph\u1ea3n \u1ee9ng. \u0110\u1eb7c bi\u1ec7t chú ý \u0111\u1ebfn nh\u1eefng ch\u1ea5t không có tính baz\u01a1 hay kim lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng.<\/p>","answer":"\u0110áp án: D. NaNO3<\/span><\/strong><\/p>Mu\u1ed1i trung tính không ph\u1ea3n \u1ee9ng v\u1edbi acid<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-07-30 23:33:33","option_type":"txt","len":0},{"id":"8535","post_id":"9785","mon_id":"1159892","chapter_id":"1160178","question":"Cho X là acid có c\u1ea5u t\u1ea1o: CH3-CH(C2H5)-CH(CH3)-COOH<\/p>Tên thay th\u1ebf c\u1ee7a X là<\/p>","options":["A. 3-ethyl-2-methylbutanoic acid","B. 2-methylbutanoic acid","C. 3,4-dimethylpentanoic acid ","D. 2,3-dimethylpentanoic acid"],"correct":"3","level":"3","hint":"\u0110\u1ecdc công th\u1ee9c m\u1ea1ch chính và v\u1ecb trí nhóm –COOH \u1edf cu\u1ed1i. \u0110\u1eb7t s\u1ed1 th\u1ee9 t\u1ef1 carbon r\u1ed3i g\u1ecdi tên theo IUPAC.<\/p>","answer":"\u0110áp án: C. 3,4-dimethylpentanoic acid<\/strong><\/span><\/p><ul> <li data-end=\"136\" data-start=\"83\">Công th\u1ee9c c\u1ea5u t\u1ea1o: CH\u2083–CH(C\u2082H\u2085)–CH(CH\u2083)–COOH<\/strong>.<\/p><\/li> <li data-end=\"228\" data-start=\"137\">Ch\u1ecdn m\u1ea1ch chính dài nh\u1ea5t ch\u1ee9a nhóm –COOH: m\u1ea1ch có 5C → g\u1ed1c chính là axit pentanoic<\/strong>.<\/p><\/li> <li data-end=\"342\" data-start=\"229\">\u0110ánh s\u1ed1 t\u1eeb C1 \u1edf nhóm –COOH:<\/p> <ul data-end=\"342\" data-start=\"263\"> <li data-end=\"292\" data-start=\"263\">C2: –CH có nhánh CH\u2083<\/strong>.<\/p><\/li> <li data-end=\"342\" data-start=\"295\">C3: –CH có nhánh C\u2082H\u2085<\/strong> (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 2C).<\/p><\/li> <\/ul> <\/li> <li data-end=\"404\" data-start=\"343\">Nh\u01b0 v\u1eady, có hai nhánh: methyl \u1edf C2<\/strong> và ethyl \u1edf C3<\/strong>.<\/p><\/li> <li data-end=\"463\" data-start=\"405\">Tên thay th\u1ebf \u0111úng: 3-ethyl-2-methylpentanoic acid<\/strong>.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-07-30 23:34:09","option_type":"txt","len":2},{"id":"8536","post_id":"9785","mon_id":"1159892","chapter_id":"1160178","question":"Cho Y là acid có c\u1ea5u t\u1ea1o: CH3-CH(CH3)-CH(CH2CH3)-COOH. Tên g\u1ecdi c\u1ee7a Y là<\/p>","options":["A. 2-ethyl-3-methylbutanoic acid","B. 2-isopropylbutanoic acid","C. 2-methylpentanoic acid ","D. 3-methylpentanoic acid"],"correct":"1","level":"3","hint":"Xác \u0111\u1ecbnh m\u1ea1ch chính dài nh\u1ea5t ch\u1ee9a –COOH và v\u1ecb trí nhánh. G\u1ecdi tên theo quy t\u1eafc \u0111ánh s\u1ed1 t\u1eeb nhóm ch\u1ee9c.<\/p>","answer":"\u0110áp án: A. 2-ethyl-3-methylbutanoic acid<\/strong><\/span><\/p>Xét m\u1ea1ch chính 4 carbon: butanoic acid<\/strong><\/p>C\u1ea5u trúc s\u1ebd là:<\/p>COOH–CH(CH\u2082CH\u2083)–CH(CH\u2083)–CH\u2083<\/strong><\/p>→ M\u1ea1ch chính là butanoic acid<\/strong>, có:<\/p><ul data-end=\"959\" data-start=\"884\"> <li data-end=\"922\" data-start=\"884\">Nhóm th\u1ebf CH\u2082CH\u2083 (ethyl)<\/strong> \u1edf C2<\/strong><\/p><\/li> <li data-end=\"959\" data-start=\"923\">Nhóm th\u1ebf CH\u2083 (methyl)<\/strong> \u1edf C3<\/strong><\/p><\/li><\/ul>\\n→ Tên g\u1ecdi: 2-ethyl-3-methylbutanoic acid<\/strong><\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-07-30 23:34:43","option_type":"txt","len":2}]}