{"common":{"save":0,"post_id":"7882","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8194","post_id":"7882","mon_id":"1159533","chapter_id":"1159554","question":"<p>Cho s\u01a1 \u0111\u1ed3 chuy\u1ec3n hóa:<\/p><p>M + O<span class=\"math-tex\">$_{2}$<\/span> → R + H<span class=\"math-tex\">$_{2}$<\/span>O<\/p><p>R + Ca(OH)<span class=\"math-tex\">$_{2}$<\/span> → P + H<span class=\"math-tex\">$_{2}$<\/span>O<\/p><p>M, R, P l\u1ea7n l\u01b0\u1ee3t là:<\/p>","options":["<strong>A.<\/strong> CO<span class=\"math-tex\">$_{2}$<\/span>, CaCO<span class=\"math-tex\">$_{3}$<\/span>, C<span class=\"math-tex\">$_{2}$<\/span>H<span class=\"math-tex\">$_{4}$<\/span>","<strong>B.<\/strong> C<span class=\"math-tex\">$_{2}$<\/span>H<span class=\"math-tex\">$_{4}$<\/span>, CO<span class=\"math-tex\">$_{2}$<\/span>, CaCO<span class=\"math-tex\">$_{3}$<\/span>","<strong>C.<\/strong> CaCO<span class=\"math-tex\">$_{3}$<\/span>, C<span class=\"math-tex\">$_{2}$<\/span>H<span class=\"math-tex\">$_{4}$<\/span>, CO<span class=\"math-tex\">$_{2}$<\/span>","<strong>D.<\/strong> CO<span class=\"math-tex\">$_{2}$<\/span>, C<span class=\"math-tex\">$_{2}$<\/span>H<span class=\"math-tex\">$_{4}$<\/span>, CaCO<span class=\"math-tex\">$_{3}$<\/span>"],"correct":"2","level":"3","hint":"<p><strong>M + O\u2082 → R + H\u2082O<\/strong>: Ph\u1ea3n \u1ee9ng này có th\u1ec3 là <strong>quá trình cháy<\/strong> c\u1ee7a m\u1ed9t h\u1ee3p ch\u1ea5t ho\u1eb7c s\u1ef1 chuy\u1ec3n hóa thành oxide.\u200b\u200b\u200b\u200b\u200b\u200b<\/p><p><strong>R + Ca(OH)\u2082 → P + H\u2082O<\/strong>: \u0110ây có th\u1ec3 là <strong>ph\u1ea3n \u1ee9ng gi\u1eefa khí và base<\/strong> \u0111\u1ec3 t\u1ea1o thành mu\u1ed1i và n\u01b0\u1edbc.<\/p><p>Xác \u0111\u1ecbnh các ch\u1ea5t khí và mu\u1ed1i th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong các ph\u1ea3n \u1ee9ng này.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>B. C<span class=\"math-tex\">$_{2}$<\/span>H<span class=\"math-tex\">$_{4}$<\/span>, CO<span class=\"math-tex\">$_{2}$<\/span>, CaCO<span class=\"math-tex\">$_{3}$<\/span><\/strong><\/span><\/p><p><strong>C<span class=\"math-tex\">$_{2}$<\/span>H<span class=\"math-tex\">$_{4}$<\/span> + O<span class=\"math-tex\">$_{2}$<\/span> → CO<span class=\"math-tex\">$_{2}$<\/span> + H<span class=\"math-tex\">$_{2}$<\/span>O<\/strong><\/p><p><strong>CO<span class=\"math-tex\">$_{2}$<\/span> + Ca(OH)<span class=\"math-tex\">$_{2}$<\/span> → CaCO<span class=\"math-tex\">$_{3}$<\/span> + H<span class=\"math-tex\">$_{2}$<\/span>O<\/strong><\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"127","test":"0","date":"2024-10-30 14:06:30","option_type":"math","len":0},{"id":"8195","post_id":"7882","mon_id":"1159533","chapter_id":"1159554","question":"<p>Cho các phát bi\u1ec3u sau: <br \/>(a) Methane, ethylene l\u1ea7n l\u01b0\u1ee3t có công th\u1ee9c phân t\u1eed là CH<span class=\"math-tex\">$_{4}$<\/span>, C<span class=\"math-tex\">$_{2}$<\/span>H<span class=\"math-tex\">$_{2}$<\/span>.<br \/>(b) Methane, ethylene \u0111\u1ec1u là các khí không màu, không mùi, nh\u1eb9 h\u01a1n n\u01b0\u1edbc, ít tan trong n\u01b0\u1edbc.<br \/>(c) \u0110\u1ec3 nh\u1eadn bi\u1ebft methane và ethylene ta có th\u1ec3 dùng dung d\u1ecbch bromine.<br \/>(d) Khi \u0111\u1ed1t cháy methane ta thu \u0111\u01b0\u1ee3c s\u1ed1 mol CO<span class=\"math-tex\">$_{2}$<\/span> b\u1eb1ng s\u1ed1 mol H<span class=\"math-tex\">$_{2}$<\/span>O.<br \/>S\u1ed1 phát bi\u1ec3u \u0111úng là:<\/p>","options":["<strong>A.<\/strong> 1","<strong>B.<\/strong> 2","<strong>C.<\/strong> 3","<strong>D.<\/strong> 4"],"correct":"2","level":"3","hint":"<p>- L\u01b0u ý <strong>methane và ethylene<\/strong> có tính ch\u1ea5t hóa h\u1ecdc và v\u1eadt lý khác nhau. M\u1ed9t trong s\u1ed1 chúng có kh\u1ea3 n\u0103ng <strong>làm m\u1ea5t màu dung d\u1ecbch bromine<\/strong>.<\/p><p>- Khi <strong>\u0111\u1ed1t cháy methane<\/strong>, s\u1eed d\u1ee5ng ph\u01b0\u01a1ng trình hóa h\u1ecdc \u0111\u1ec3 xét t\u1ef7 l\u1ec7 mol c\u1ee7a <strong>CO\u2082 và H\u2082O<\/strong>.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>B. 2<\/strong><\/span><\/p><p><strong>- Phát bi\u1ec3u (a):<\/strong> <em>Sai. <\/em><strong>Methane<\/strong> có công th\u1ee9c phân t\u1eed là <strong>CH\u2084<\/strong> (\u0111úng) còn <strong>Ethylene<\/strong> (etilen) có công th\u1ee9c <strong>C\u2082H\u2084<\/strong>, không ph\u1ea3i <strong>C\u2082H\u2082<\/strong>.<\/p><p><strong>- Phát bi\u1ec3u (b):<\/strong> <em>\u0110úng.<\/em> C\u1ea3 methane và ethylene \u0111\u1ec1u là <strong>khí không màu, không mùi, nh\u1eb9 h\u01a1n n\u01b0\u1edbc<\/strong> và <strong>ít tan trong n\u01b0\u1edbc<\/strong>.<\/p><p><strong>- Phát bi\u1ec3u (c):<\/strong> <em>\u0110úng.<\/em> <strong>Ethylene<\/strong> có liên k\u1ebft \u0111ôi, có th\u1ec3 <strong>làm m\u1ea5t màu dung d\u1ecbch bromine<\/strong>. Methane không ph\u1ea3n \u1ee9ng v\u1edbi bromine trong \u0111i\u1ec1u ki\u1ec7n th\u01b0\u1eddng.<\/p><p><strong>- Phát bi\u1ec3u (d):<\/strong> <em>Sai. <\/em>Ph\u01b0\u01a1ng trình \u0111\u1ed1t cháy methane: CH<span class=\"math-tex\">$_{4}$<\/span> + 2O<span class=\"math-tex\">$_{2}$<\/span> → CO<span class=\"math-tex\">$_{2}$<\/span> + 2H<span class=\"math-tex\">$_{2}$<\/span>O. T\u1ef7 l\u1ec7 s\u1ed1 mol CO\u2082 : H\u2082O = 1 : 2. Do \u0111ó, s\u1ed1 mol <strong>CO\u2082 b\u1eb1ng s\u1ed1 mol H\u2082O chia 2<\/strong>, không ph\u1ea3i b\u1eb1ng nhau.<\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"127","test":"0","date":"2024-10-30 14:28:52","option_type":"txt","len":0},{"id":"8196","post_id":"7882","mon_id":"1159533","chapter_id":"1159554","question":"<p>\u1ee8ng d\u1ee5ng nào sau \u0111ây không ph\u1ea3i \u1ee9ng d\u1ee5ng c\u1ee7a ethylene? <\/p>","options":["<strong>A. <\/strong>\u0110i\u1ec1u ch\u1ebf PE","<strong>B.<\/strong> \u0110i\u1ec1u ch\u1ebf ethylic alcohol và acetic acid","<strong>C. <\/strong>\u0110i\u1ec1u ch\u1ebf khí gas","<strong>D. <\/strong>Dùng \u0111\u1ec3 \u1ee7 trái cây mau chín"],"correct":"3","level":"3","hint":"<p>- Ethylene (C\u2082H\u2084) là m\u1ed9t h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 quan tr\u1ecdng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng trong công nghi\u1ec7p và nông nghi\u1ec7p.<\/p><p>- L\u01b0u ý v\u1ec1 <strong>các vai trò chính c\u1ee7a ethylene<\/strong>, nh\u01b0 <strong>polymer hóa<\/strong>, <strong>ch\u1ea5t xúc tác sinh h\u1ecdc<\/strong>, và <strong>nguyên li\u1ec7u hóa h\u1ecdc<\/strong>.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>C. \u0110i\u1ec1u ch\u1ebf khí gas<\/strong><\/span><\/p><p><span style=\"color:#16a085;\"><\/span><strong>\u1ee8ng d\u1ee5ng c\u1ee7a ethylene:<\/strong><\/p><p><strong>- <\/strong><strong>\u0110i\u1ec1u ch\u1ebf polyetylen (PE):<\/strong> Ethylene \u0111\u01b0\u1ee3c trùng h\u1ee3p \u0111\u1ec3 t\u1ea1o ra PE, m\u1ed9t trong nh\u1eefng lo\u1ea1i nh\u1ef1a ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p><p><strong>- \u0110i\u1ec1u ch\u1ebf ethanol (ethyl alcohol) và acid acetic:<\/strong> Ethylene có th\u1ec3 \u0111\u01b0\u1ee3c dùng làm nguyên li\u1ec7u trong s\u1ea3n xu\u1ea5t các hóa ch\u1ea5t này.<\/p><p><strong>- Dùng \u0111\u1ec3 \u1ee7 trái cây:<\/strong> Ethylene là <strong>hormone th\u1ef1c v\u1eadt<\/strong>, giúp kích thích quá trình chín c\u1ee7a trái cây.<\/p><p><strong>- Khí gas<\/strong> (nh\u01b0 propan, butan) không \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf t\u1eeb ethylene. Vì v\u1eady, \u0111ây là <strong>\u0111áp án sai<\/strong>.<\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"127","test":"0","date":"2024-10-30 14:34:03","option_type":"txt","len":0}]}