Công thức phân tử hợp chất hữu cơ

Home Lớp 11 Hoá học Lớp 11 - Sách Kết nối tri thức Bài 12: Công thức phân tử hợp chất hữu cơBài tập trung bình

{"common":{"save":0,"post_id":"9174","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7135","post_id":"9174","mon_id":"1159892","chapter_id":"1159991","question":"Vitamin A (retinol) có công th\u1ee9c phân t\u1eed C20H30O, công th\u1ee9c \u0111\u01a1n gi\u1ea3n nh\u1ea5t c\u1ee7a vitamin A là:<\/p>","options":["A. C2H3O","B. C20H30O","C. C4H6O","D. C4H6O2"],"correct":"2","level":"2","hint":"","answer":"\u0110áp án \u0111úng: B. C20H30O<\/strong><\/p>Vì:<\/strong> Các ch\u1ec9 s\u1ed1 20, 30 và 1 không có \u01b0\u1edbc chung l\u1edbn h\u01a1n 1 → không rút g\u1ecdn \u0111\u01b0\u1ee3c → công th\u1ee9c \u0111\u01a1n gi\u1ea3n nh\u1ea5t chính là công th\u1ee9c phân t\u1eed.<\/strong><\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-05-05 10:48:45","option_type":"txt","len":0},{"id":"7136","post_id":"9174","mon_id":"1159892","chapter_id":"1159991","question":"Ch\u1ea5t h\u1eefu c\u01a1 X có ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng C, H, O l\u1ea7n l\u01b0\u1ee3t b\u1eb1ng 40%; 6,67%; 53,33%. Bi\u1ebft trong X có 2 nguyên t\u1eed oxygen. Công th\u1ee9c phân t\u1eed c\u1ee7a X là:<\/p>","options":["A. CH2O2","B. C2H3O2","C. C2H4O2","D. C3H6O2"],"correct":"3","level":"2","hint":"","answer":"\u0110áp án \u0111úng: C. C2H4O2<\/strong><\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-05-06 08:21:48","option_type":"txt","len":0},{"id":"7137","post_id":"9174","mon_id":"1159892","chapter_id":"1159991","question":"H\u1ee3p ch\u1ea5t X có công th\u1ee9c \u0111\u01a1n gi\u1ea3n nh\u1ea5t là CH2O. T\u1ec9 kh\u1ed1i h\u01a1i c\u1ee7a X so v\u1edbi helium b\u1eb1ng 15. Công th\u1ee9c phân t\u1eed c\u1ee7a X là<\/p>","options":["A. CH2O","B. C2H4O2","C. C3H6O2","D. C4H8O2."],"correct":"2","level":"2","hint":"","answer":"\u0110áp án \u0111úng: B. 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