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Home Lớp 8 Khoa học tự nhiên 8 - sách Kết nối tri thức Bài 11: MuốiBài tập cơ bản

{"common":{"save":0,"post_id":"8577","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7989","post_id":"8577","mon_id":"1159539","chapter_id":"1159543","question":"\u0110i\u1ec1n vào ch\u1ed7 tr\u1ed1ng: "Mu\u1ed1i là nh\u1eefng h\u1ee3p ch\u1ea5t \u0111\u01b0\u1ee3c t\u1ea1p ra khi thay th\u1ebf ion ... trong ... b\u1eb1ng ion kim lo\u1ea1i ho\u1eb7c ion ammonium (NH+4)."<\/p>","options":["A. OH−, base","B. OH−, acid","C. H+, acid","D. H+, base"],"correct":"3","level":"1","hint":"Hãy nh\u1edb r\u1eb1ng mu\u1ed1i \u0111\u01b0\u1ee3c t\u1ea1o thành t\u1eeb ph\u1ea3n \u1ee9ng trung hòa gi\u1eefa axit và baz\u01a1. Xác \u0111\u1ecbnh ion nào trong axit b\u1ecb thay th\u1ebf \u0111\u1ec3 t\u1ea1o ra mu\u1ed1i.<\/p>","answer":"\u0110áp án \u0111úng: C. H+, acid<\/strong><\/p>Mu\u1ed1i \u0111\u01b0\u1ee3c hình thành khi ion H\u207a trong axit b\u1ecb thay th\u1ebf b\u1edfi ion kim lo\u1ea1i ho\u1eb7c ion NH\u2084\u207a. \u0110ây là k\u1ebft qu\u1ea3 c\u1ee7a ph\u1ea3n \u1ee9ng trung hòa gi\u1eefa axit và baz\u01a1, trong \u0111ó H\u207a c\u1ee7a axit k\u1ebft h\u1ee3p v\u1edbi OH\u207b c\u1ee7a baz\u01a1 t\u1ea1o thành n\u01b0\u1edbc, còn ph\u1ea7n còn l\u1ea1i c\u1ee7a axit và baz\u01a1 t\u1ea1o ra mu\u1ed1i.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-04 21:50:33","option_type":"txt","len":2},{"id":"7990","post_id":"8577","mon_id":"1159539","chapter_id":"1159543","question":"Mu\u1ed1i c\u1ee7a hydrochloric acid có tên g\u1ecdi là:<\/p>","options":["A. Mu\u1ed1i chloride","B. Mu\u1ed1i phosphate","C. Mu\u1ed1i carbonate","D. Mu\u1ed1i sulfate"],"correct":"1","level":"1","hint":"Tên mu\u1ed1i \u0111\u01b0\u1ee3c t\u1ea1o thành t\u1eeb hydrochloric acid có ph\u1ea7n \u0111uôi gi\u1ed1ng v\u1edbi tên ion âm c\u1ee7a axit này.<\/p>","answer":"\u0110áp án \u0111úng: A. Mu\u1ed1i chloride<\/strong><\/p>Hydrochloric acid (HCl) khi tác d\u1ee5ng v\u1edbi baz\u01a1 ho\u1eb7c kim lo\u1ea1i t\u1ea1o ra mu\u1ed1i có ch\u1ee9a ion Cl\u207b<\/strong> (chloride). Ví d\u1ee5: NaCl (natri chloride), KCl (kali chloride). Các \u0111áp án khác liên quan \u0111\u1ebfn các axit khác nh\u01b0:<\/p>- Phosphate<\/strong> (PO\u2084³\u207b) t\u1eeb phosphoric acid (H\u2083PO\u2084)<\/p>- Carbonate<\/strong> (CO\u2083²\u207b) t\u1eeb carbonic acid (H\u2082CO\u2083)<\/p>- Sulfate<\/strong> (SO\u2084²\u207b) t\u1eeb sulfuric acid (H\u2082SO\u2084)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-04 21:51:48","option_type":"txt","len":2},{"id":"7991","post_id":"8577","mon_id":"1159539","chapter_id":"1159543","question":"Trong t\u1ef1 nhiên mu\u1ed1i sodium chloride có nhi\u1ec1u trong:<\/p>","options":["A. N\u01b0\u1edbc bi\u1ec3n.","B. N\u01b0\u1edbc m\u01b0a.","C. N\u01b0\u1edbc sông.","D. N\u01b0\u1edbc gi\u1ebfng."],"correct":"1","level":"1","hint":"Hãy ngh\u0129 v\u1ec1 n\u01a1i có v\u1ecb m\u1eb7n t\u1ef1 nhiên mà b\u1ea1n có th\u1ec3 n\u1ebfm \u0111\u01b0\u1ee3c khi \u0111i du l\u1ecbch bi\u1ec3n.<\/p>","answer":"\u0110áp án \u0111úng: A. N\u01b0\u1edbc bi\u1ec3n.<\/strong><\/p>Trong t\u1ef1 nhiên, mu\u1ed1i sodium chloride (NaCl) t\u1ed3n t\u1ea1i nhi\u1ec1u nh\u1ea5t trong n\u01b0\u1edbc bi\u1ec3n, t\u1ea1o nên v\u1ecb m\u1eb7n \u0111\u1eb7c tr\u01b0ng. Trong khi \u0111ó, n\u01b0\u1edbc m\u01b0a, n\u01b0\u1edbc sông và n\u01b0\u1edbc gi\u1ebfng th\u01b0\u1eddng không ch\u1ee9a nhi\u1ec1u mu\u1ed1i này vì chúng có ngu\u1ed3n g\u1ed1c t\u1eeb quá trình bay h\u01a1i và th\u1ea5m l\u1ecdc qua \u0111\u1ea5t.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-03-04 21:53:26","option_type":"txt","len":2}]}