Khái niệm về cân bằng hoá học

Home Lớp 11 Hoá học Lớp 11 - Sách Kết nối tri thức Bài 1: Khái niệm về cân bằng hoá họcBài tập cơ bản

{"common":{"save":0,"post_id":"8841","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6293","post_id":"8841","mon_id":"1159892","chapter_id":"1159893","question":"Cho cân b\u1eb1ng hóa h\u1ecdc: 2SO2 (g) + O2 (g) \u21cc 2SO3 (g)<\/p>Ph\u1ea3n \u1ee9ng thu\u1eadn là ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t. Phát bi\u1ec3u nào sau \u0111ây \u0111úng?<\/p>","options":["A. Cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo chi\u1ec1u thu\u1eadn khi t\u0103ng nhi\u1ec7t \u0111\u1ed9","B. Cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo chi\u1ec1u ngh\u1ecbch khi gi\u1ea3m n\u1ed3ng \u0111\u1ed9 O2","C. Cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo chi\u1ec1u thu\u1eadn khi gi\u1ea3m áp su\u1ea5t h\u1ec7 ph\u1ea3n \u1ee9ng","D. Cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo chi\u1ec1u ngh\u1ecbch khi gi\u1ea3m n\u1ed3ng \u0111\u1ed9 SO3"],"correct":"2","level":"1","hint":"","answer":"\u0110áp án \u0111úng: B. Cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo chi\u1ec1u ngh\u1ecbch khi gi\u1ea3m n\u1ed3ng \u0111\u1ed9 O2<\/strong><\/p>Khi gi\u1ea3m n\u1ed3ng \u0111\u1ed9 O\u2082<\/strong>, h\u1ec7 s\u1ebd ph\u1ea3n \u1ee9ng \u0111\u1ec3 t\u1ea1o ra thêm O\u2082<\/strong> nh\u1eb1m khôi ph\u1ee5c l\u1ea1i tr\u1ea1ng thái cân b\u1eb1ng.<\/p>Mu\u1ed1n t\u1ea1o thêm O\u2082<\/strong>, h\u1ec7 ph\u1ea3i \u0111i theo chi\u1ec1u ngh\u1ecbch<\/strong> (t\u1ee9c là phân h\u1ee7y SO\u2083 → SO\u2082 + O\u2082).<\/p>→ Cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo chi\u1ec1u ngh\u1ecbch<\/strong>.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-04-10 19:11:51","option_type":"txt","len":3},{"id":"6319","post_id":"8841","mon_id":"1159892","chapter_id":"1159893","question":"Cho cân b\u1eb1ng hóa h\u1ecdc: N2 (g) + 3H2 (g) \u21cc 2NH3 (g)<\/p>Ph\u1ea3n \u1ee9ng thu\u1eadn là ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t. Cân b\u1eb1ng hóa h\u1ecdc không b\u1ecb chuy\u1ec3n d\u1ecbch khi<\/p>","options":["A. thay \u0111\u1ed5i áp su\u1ea5t c\u1ee7a h\u1ec7","B. thay \u0111\u1ed5i n\u1ed3ng \u0111\u1ed9 N2","C. thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9","D. thêm ch\u1ea5t xúc tác Fe"],"correct":"4","level":"1","hint":"","answer":"\u0110áp án \u0111úng: D. thêm ch\u1ea5t xúc tác Fe<\/strong><\/p>Ch\u1ea5t xúc tác (nh\u01b0 Fe) không làm thay \u0111\u1ed5i v\u1ecb trí cân b\u1eb1ng<\/strong> mà ch\u1ec9 giúp ph\u1ea3n \u1ee9ng \u0111\u1ea1t tr\u1ea1ng thái cân b\u1eb1ng nhanh h\u01a1n. Trong khi \u0111ó, thay \u0111\u1ed5i áp su\u1ea5t<\/strong>, n\u1ed3ng \u0111\u1ed9<\/strong>, ho\u1eb7c nhi\u1ec7t \u0111\u1ed9<\/strong> \u0111\u1ec1u có th\u1ec3 làm cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo nguyên lý Le Chatelier<\/strong>.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-04-11 23:40:53","option_type":"txt","len":2},{"id":"6320","post_id":"8841","mon_id":"1159892","chapter_id":"1159893","question":"Trong m\u1ed9t bình kín có cân b\u1eb1ng hóa h\u1ecdc sau: 2NO2 (g) \u21cc N2O4 (g)<\/p>T\u1ec9 kh\u1ed1i h\u01a1i c\u1ee7a h\u1ed7n h\u1ee3p khí trong bình so v\u1edbi H2 \u1edf nhi\u1ec7t \u0111\u1ed9 T1 b\u1eb1ng 27,6 và \u1edf nhi\u1ec7t \u0111\u1ed9 T2 b\u1eb1ng 34,5. Bi\u1ebft T1 > T2.<\/p>Phát bi\u1ec3u nào sau \u0111ây v\u1ec1 cân b\u1eb1ng trên là \u0111úng?<\/p>","options":["A. Ph\u1ea3n \u1ee9ng thu\u1eadn là ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t.","B. Khi t\u0103ng nhi\u1ec7t \u0111\u1ed9, áp su\u1ea5t chung c\u1ee7a h\u1ec7 cân b\u1eb1ng gi\u1ea3m.","C. Khi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9, áp su\u1ea5t chung c\u1ee7a h\u1ec7 cân b\u1eb1ng t\u0103ng.","D. Ph\u1ea3n \u1ee9ng ngh\u1ecbch là ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t."],"correct":"1","level":"1","hint":"","answer":"\u0110áp án \u0111úng: A. Ph\u1ea3n \u1ee9ng thu\u1eadn là ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t.<\/strong><\/p>Ph\u1ea3n \u1ee9ng: 2NO\u2082 (g) \u21cc N\u2082O\u2084 (g)<\/strong> → Ph\u1ea3n \u1ee9ng thu\u1eadn làm gi\u1ea3m s\u1ed1 mol khí<\/strong> (t\u1eeb 2 mol NO\u2082 → 1 mol N\u2082O\u2084)<\/p> Khi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9<\/strong> (T2 < T1), t\u1ec9 kh\u1ed1i t\u0103ng<\/strong> (t\u1eeb 27,6 → 34,5) ch\u1ee9ng t\u1ecf h\u1ed7n h\u1ee3p có ít NO\u2082 h\u01a1n<\/strong>, nhi\u1ec1u N\u2082O\u2084 h\u01a1n → cân b\u1eb1ng chuy\u1ec3n d\u1ecbch theo chi\u1ec1u thu\u1eadn<\/strong>.<\/p> Suy ra:<\/strong> Ph\u1ea3n \u1ee9ng thu\u1eadn x\u1ea3y ra khi gi\u1ea3m nhi\u1ec7t → ph\u1ea3n \u1ee9ng thu\u1eadn là t\u1ecfa nhi\u1ec7t<\/strong> (theo nguyên lý Le Chatelier).<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-04-11 23:42:09","option_type":"txt","len":3}]}