{"common":{"save":0,"post_id":"9050","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6845","post_id":"9050","mon_id":"1159892","chapter_id":"1159938","question":"<p data-pm-slice=\"0 0 []\">H\u01a1i th\u1ee7y ngân r\u1ea5t d\u1ed9c, b\u1edfi v\u1eady khi làm v\u1ee1 nhi\u1ec7t k\u1ebf th\u1ee7y ngân thì ch\u1ea5t b\u1ed9t \u0111\u01b0\u1ee3c dùng \u0111\u1ec3 r\u1eafc lên th\u1ee7y ngân r\u1ed3i gom l\u1ea1i là<\/p>","options":["A. vôi s\u1ed1ng.","B. cát.","C. mu\u1ed1i \u0103n.","D. sulfur."],"correct":"4","level":"2","hint":"<p>Dùng ch\u1ea5t b\u1ed9t có kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 và t\u1ea1o h\u1ee3p ch\u1ea5t v\u1edbi Hg \u0111\u1ec3 gom th\u1ee7y ngân<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>D. sulfur.<\/strong><\/span><\/p><p>Khi làm v\u1ee1 nhi\u1ec7t k\u1ebf th\u1ee7y ngân, <strong data-end=\"41\" data-start=\"31\">sulfur<\/strong> (l\u01b0u hu\u1ef3nh) th\u01b0\u1eddng \u0111\u01b0\u1ee3c dùng \u0111\u1ec3 r\u1eafc lên th\u1ee7y ngân và giúp gom l\u1ea1i, vì sulfur có th\u1ec3 liên k\u1ebft v\u1edbi th\u1ee7y ngân \u0111\u1ec3 t\u1ea1o thành h\u1ee3p ch\u1ea5t th\u1ee7y ngân(II) sulfide (HgS), giúp gi\u1ea3m b\u1edbt \u0111\u1ed9c tính c\u1ee7a th\u1ee7y ngân.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-04-24 07:59:47","option_type":"txt","len":2},{"id":"6846","post_id":"9050","mon_id":"1159892","chapter_id":"1159938","question":"<p data-pm-slice=\"0 0 []\">Sulfur dioxide có th\u1ec3 tham gia nh\u1eefng ph\u1ea3n \u1ee9ng sau:<\/p><p>(1) SO2 + Br2 + 2H2O → H2SO4 + 2HBr<\/p><p>(2) SO2 + 2H2S → 3S + 2H2O<\/p><p>Câu nào sau \u0111ây di\u1ec5n t\u1ea3 không \u0111úng tính ch\u1ea5t c\u1ee7a các ch\u1ea5t trong ph\u1ea3n \u1ee9ng trên?<\/p>","options":["A. Ph\u1ea3n \u1ee9ng (1): SO2 là ch\u1ea5t kh\u1eed, Br2 là ch\u1ea5t oxi hóa.","B. Ph\u1ea3n \u1ee9ng (2): SO2 là ch\u1ea5t oxi hóa, H2S là ch\u1ea5t kh\u1eed.","C. Ph\u1ea3n \u1ee9ng (2): SO2 là v\u1eeba là ch\u1ea5t kh\u1eed, v\u1eeba là ch\u1ea5t oxi hóa.","D. Ph\u1ea3n \u1ee9ng (1): Br2 là ch\u1ea5t oxi hóa; ph\u1ea3n \u1ee9ng (2): H2S là ch\u1ea5t kh\u1eed."],"correct":"3","level":"2","hint":"<p>Xem xét vai trò oxi hóa–kh\u1eed c\u1ee7a SO\u2082 và H\u2082S\/Br\u2082 \u0111\u1ec3 tìm phát bi\u1ec3u sai.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>C. Ph\u1ea3n \u1ee9ng (2): SO2 là v\u1eeba là ch\u1ea5t kh\u1eed, v\u1eeba là ch\u1ea5t oxi hóa.<\/strong><\/span><\/p><p>SO2 trong ph\u1ea3n \u1ee9ng (2) không v\u1eeba là ch\u1ea5t kh\u1eed, v\u1eeba là ch\u1ea5t oxi hóa, mà nó ch\u1ee7 y\u1ebfu là ch\u1ea5t oxi hóa trong ph\u1ea3n \u1ee9ng này.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-04-24 08:01:25","option_type":"txt","len":3},{"id":"6847","post_id":"9050","mon_id":"1159892","chapter_id":"1159938","question":"<p data-pm-slice=\"0 0 []\">\u1ee8ng d\u1ee5ng nào sau \u0111ây không ph\u1ea3i c\u1ee7a S ?<\/p>","options":["A. Làm nguyên li\u1ec7u s\u1ea3n xu\u1ea5t Sulfuric acid.","B. Làm ch\u1ea5t l\u01b0u hóa cao su.","C. Kh\u1eed chua \u0111\u1ea5t.","D. \u0110i\u1ec1u ch\u1ebf thu\u1ed1c súng \u0111en."],"correct":"3","level":"2","hint":"<p>Lo\u1ea1i b\u1ecf \u1ee9ng d\u1ee5ng không th\u1ef1c t\u1ebf ho\u1eb7c không thu\u1ed9c v\u1ec1 l\u01b0u hu\u1ef3nh.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>C. Kh\u1eed chua \u0111\u1ea5t.<\/strong><\/span><\/p><p data-end=\"45\" data-start=\"0\">L\u01b0u hu\u1ef3nh (S) có nhi\u1ec1u \u1ee9ng d\u1ee5ng quan tr\u1ecdng:<\/p><ul data-end=\"197\" data-start=\"47\"> <li data-end=\"102\" data-start=\"47\"><p data-end=\"102\" data-start=\"49\"><strong data-end=\"79\" data-start=\"49\">Nguyên li\u1ec7u s\u1ea3n xu\u1ea5t H\u2082SO\u2084<\/strong> → \u1ee9ng d\u1ee5ng l\u1edbn nh\u1ea5t.<\/p><\/li> <li data-end=\"158\" data-start=\"103\"><p data-end=\"158\" data-start=\"105\"><strong data-end=\"132\" data-start=\"105\">Làm ch\u1ea5t l\u01b0u hóa cao su<\/strong> → t\u0103ng \u0111\u1ed9 b\u1ec1n, \u0111àn h\u1ed3i.<\/p><\/li> <li data-end=\"197\" data-start=\"159\"><p data-end=\"197\" data-start=\"161\"><strong data-end=\"194\" data-start=\"161\">\u0110i\u1ec1u ch\u1ebf thu\u1ed1c súng \u0111en, diêm<\/strong>.<\/p><\/li> <li data-end=\"197\" data-start=\"159\"><p data-end=\"197\" data-start=\"161\">Nh\u01b0ng <strong data-end=\"238\" data-start=\"208\">không dùng \u0111\u1ec3 kh\u1eed chua \u0111\u1ea5t<\/strong> → vi\u1ec7c này th\u01b0\u1eddng dùng <strong data-end=\"291\" data-start=\"262\">vôi (CaO, Ca(OH)\u2082, CaCO\u2083)<\/strong>.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-04-24 08:02:38","option_type":"txt","len":3}]}