{"common":{"save":0,"post_id":"8650","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7994","mon_id":"1158798","chapter_id":"1158874","post_id":"8650","question":"<p data-pm-slice=\"0 0 []\">Cho ph\u1ea3n \u1ee9ng hóa h\u1ecdc sau: S(s) + O2(g) → SO2(g)<\/p><p>Y\u1ebfu t\u1ed1 nào sau \u0111ây không \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng trên?<\/p>","options":["A. Nhi\u1ec7t \u0111\u1ed9.","B. Áp su\u1ea5t O2.","C. Hàm l\u01b0\u1ee3ng sulfur.","D. Di\u1ec7n tích b\u1ec1 m\u1eb7t sulfur."],"correct":"3","level":"1","hint":"","answer":"<p>\u0110áp án \u0111úng: <strong>C. Hàm l\u01b0\u1ee3ng sulfur.<\/strong><\/p><p>Hàm l\u01b0\u1ee3ng sulfur ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m sinh ra ch\u1ee9 không \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-03-20 23:49:02","option_type":"txt","len":2},{"id":"7995","mon_id":"1158798","chapter_id":"1158874","post_id":"8650","question":"<p data-pm-slice=\"0 0 []\">Cho Zn ph\u1ea3n \u1ee9ng v\u1edbi HCl \u0111\u1ec3 \u0111i\u1ec1u ch\u1ebf hydrogen. Bi\u1ec7n pháp \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng này là:<\/p>","options":["A. Ngâm bình ph\u1ea3n \u1ee9ng trong bình n\u01b0\u1edbc \u0111á l\u1ea1nh.","B. Dùng dung d\u1ecbch HCl \u0111\u1eadm \u0111\u1eb7c h\u01a1n.","C. Dùng viên Zn thay vì các m\u1ea3nh v\u1ee5n k\u1ebdm.","D. Dùng viên Zn có kh\u1ed1i l\u01b0\u1ee3ng g\u1ea5p \u0111ôi l\u01b0\u1ee3ng Zn ban \u0111\u1ea7u."],"correct":"2","level":"1","hint":"","answer":"<p>\u0110áp án \u0111úng: <strong>B. Dùng dung d\u1ecbch HCl \u0111\u1eadm \u0111\u1eb7c h\u01a1n.<\/strong><\/p><p>Dùng dung d\u1ecbch HCl \u0111\u1eadm \u0111\u1eb7c h\u01a1n là cách t\u0103ng n\u1ed3ng \u0111\u1ed9 ch\u1ea5t tham gia ph\u1ea3n \u1ee9ng \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-03-20 23:50:17","option_type":"txt","len":3},{"id":"7996","mon_id":"1158798","chapter_id":"1158874","post_id":"8650","question":"<p data-pm-slice=\"0 0 []\">Khí oxygen \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf trong phòng thí nghi\u1ec7m b\u1eb1ng cách nhi\u1ec7t phân potassium chlorate. \u0110\u1ec3 thí nghi\u1ec7m thành công và rút ng\u1eafn th\u1eddi gian ti\u1ebfn hành có th\u1ec3 dùng m\u1ed9t s\u1ed1 bi\u1ec7n pháp sau:<\/p><p>(1) Dùng ch\u1ea5t xúc tác manganese dioxide.<\/p><p>(2) Nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p><p>(3) Dùng ph\u01b0\u01a1ng pháp d\u1eddi n\u01b0\u1edbc \u0111\u1ec3 thu khí oxygen.<\/p><p>(4) \u0110\u1eadp nh\u1ecf potassium chlorate.<\/p><p>(5) Tr\u1ed9n \u0111\u1ec1u b\u1ed9t potassium chlorate và xúc tác.<\/p><p>S\u1ed1 bi\u1ec7n pháp dùng \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng là:<\/p>","options":["A. 2.","B. 3.","C. 4.","D. 5."],"correct":"3","level":"1","hint":"","answer":"<p>\u0110áp án \u0111úng: <strong>C. 4.<\/strong><\/p><p data-pm-slice=\"0 0 []\">- Các bi\u1ec7n pháp làm t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng là (1), (2), (4) và (5)<\/p><p>- Bi\u1ec7n pháp (3) ch\u1ec9 mô t\u1ea3 cách thu khí oxygen<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-03-20 23:53:52","option_type":"txt","len":0}]}
