https://dashboard.mempawahkab.go.id/wp-content/plugins/ https://www.kungfuology.com/mt-static/ https://pgsd.fkip.unsulbar.ac.id/wp-content/server/https://www.kungfuology.com/home/plugins/ https://land.ubiz.ua/assets/img/ https://sentraki.polimarin.ac.id/js/slot-dana/ https://qml.cvc.uab.es/responsivl/slot-gacor/ https://sentraki.polimarin.ac.id/public/js/ https://fh.uki.ac.id/nul/slot-pulsa/ https://ncc.potensi-utama.ac.id/wp-content/plugins/ https://pgsd.fkip.unsulbar.ac.id/wp-includes/qris/ https://aktasidangmd.gkjw.or.id/aset/css/ https://simpenmas.untirta.ac.id/plugins/slot-dana/
{"id":24307,"date":"2018-03-28T22:51:17","date_gmt":"2018-03-28T15:51:17","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=24307"},"modified":"2018-03-28T22:51:17","modified_gmt":"2018-03-28T15:51:17","slug":"chuong-7-bai-34-crom-va-hop-chat-cua-crom","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/","title":{"rendered":"Ch\u01b0\u01a1ng 7 – B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom"},"content":{"rendered":"

B\u00e0i 1 (trang 155 SGK H\u00f3a 12):\u00a0Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng trong d\u00e3y chuy\u1ec3n h\u00f3a sau:<\/strong><\/p>\n

Cr \u2192 Cr2<\/sub>O3<\/sub>\u00a0\u2192 Cr2<\/sub>(SO4<\/sub>)3<\/sub>\u00a0\u2192 Cr(OH)3<\/sub>\u00a0\u2192 Cr2<\/sub>O3<\/sub><\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

(1) 4Cr + 3O2<\/sub>\u00a0\u2192 2Cr2<\/sub>O3<\/sub><\/p>\n

(2) Cr2<\/sub>O3<\/sub>\u00a0+ H2<\/sub>SO4<\/sub>\u00a0\u2192 Cr2<\/sub>(SO4<\/sub>)3<\/sub>\u00a0+ H2<\/sub>O<\/p>\n

(3) Cr2<\/sub>(SO4<\/sub>)3<\/sub>\u00a0+ 6NaOH \u2192 2Cr(OH)3<\/sub>\u00a0+ 3Na2<\/sub>SO4<\/sub><\/p>\n

(4) 2Cr(OH)3<\/sub>\u00a0\u2192 Cr2<\/sub>O3<\/sub>\u00a0+ 3H2<\/sub>O<\/p>\n

B\u00e0i 2 (trang 155 SGK H\u00f3a 12):\u00a0C\u1ea5u h\u00ecnh electron c\u1ee7a ion Cr3+<\/sup>\u00a0l\u00e0 ph\u01b0\u01a1ng \u00e1n n\u00e0o?<\/strong><\/p>\n

A.[Ar] 3d5<\/sup><\/p>\n

B.[Ar] 3d4<\/sup><\/p>\n

C.[Ar] 3d3<\/sup><\/p>\n

D.[Ar] 3d2<\/sup><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e1p \u00e1n C.<\/p>\n

B\u00e0i 3 (trang 155 SGK H\u00f3a 12):\u00a0C\u00e1c s\u1ed1 oxi h\u00f3a \u0111\u1eb7c tr\u01b0ng c\u1ee7a crom l\u00e0 ph\u01b0\u01a1ng \u00e1n n\u00e0o?<\/strong><\/p>\n

A. +2, +4, +6.<\/p>\n

B. +2, +3, +6.<\/p>\n

C. +1, +2, +4, +6.<\/p>\n

D. +3, +4, +6.<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e1p \u00e1n B.<\/p>\n

B\u00e0i 4 (trang 155 SGK H\u00f3a 12):\u00a0H\u00e3y vi\u1ebft c\u00f4ng th\u1ee9c c\u1ee7a m\u1ed9t s\u1ed1 mu\u1ed1i trong \u0111\u00f3 nguy\u00ean t\u1ed1 crom<\/strong><\/p>\n

a) \u0110\u00f3ng vai tr\u00f2 cation.<\/p>\n

b) C\u00f3 trong th\u00e0nh ph\u1ea7n c\u1ee7a anion.<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Mu\u1ed1i m\u00e0 crom \u0111\u00f3ng vai tr\u00f2 c\u1ee7a cation : Cr2<\/sub>(SO4<\/sub>)3<\/sub>, CrCl3<\/sub>, CrSO4<\/sub><\/p>\n

Mu\u1ed1i m\u00e0 crom c\u00f3 trong th\u00e0nh ph\u1ea7n c\u1ee7a anion : K2<\/sub>Cr2<\/sub>O7<\/sub>, Na2<\/sub>CrO4<\/sub><\/p>\n

B\u00e0i 5 (trang 155 SGK H\u00f3a 12):\u00a0Khi nung n\u00f3ng 2 mol natri \u0111icromat ng\u01b0\u1eddi ta thu \u0111\u01b0\u1ee3c 48 gam O2<\/sub>\u00a0v\u00e0 1 mol crom (III) oxit. H\u00e3y vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc c\u1ee7a ph\u1ea3n \u1ee9ng v\u00e0 xem x\u00e9t natri \u0111icromat \u0111\u00e3 b\u1ecb nhi\u1ec7t ph\u00e2n ho\u00e0n to\u00e0n ch\u01b0a?<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

2Na2<\/sub>Cr2<\/sub>O7<\/sub>\u00a0\u2192 2Na2<\/sub>O + 2Cr2<\/sub>O3<\/sub>\u00a0+ 3O2<\/sub><\/p>\n

S\u1ed1 mol O2<\/sub>\u00a0l\u00e0 nO2<\/sub>\u00a0= 48 \/ 32 = 1,5(mol)<\/p>\n

S\u1ed1 mol Na2<\/sub>Cr2<\/sub>O7<\/sub>\u00a0nNa2Cr2O7<\/sub>= 2\/3 x nO2<\/sub>\u00a0= 1(mol)<\/p>\n

Nung 2 mol Na2<\/sub>Cr2<\/sub>O7<\/sub>\u00a0n\u1ebfu thu 48 gam O2<\/sub>\u00a0th\u00ec ch\u1ec9 nung h\u1ebft 1 (mol). Do \u0111\u00f3 ph\u1ea3n \u1ee9ng ch\u01b0a k\u1ebft th\u00fac.<\/p>\n","protected":false},"excerpt":{"rendered":"

B\u00e0i 1 (trang 155 SGK H\u00f3a 12):\u00a0Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng trong d\u00e3y chuy\u1ec3n h\u00f3a sau: Cr \u2192 Cr2O3\u00a0\u2192 Cr2(SO4)3\u00a0\u2192 Cr(OH)3\u00a0\u2192 Cr2O3 L\u1eddi gi\u1ea3i: (1) 4Cr + 3O2\u00a0\u2192 2Cr2O3 (2) Cr2O3\u00a0+ H2SO4\u00a0\u2192 Cr2(SO4)3\u00a0+ H2O (3) Cr2(SO4)3\u00a0+ 6NaOH \u2192 2Cr(OH)3\u00a0+ 3Na2SO4 (4) 2Cr(OH)3\u00a0\u2192 Cr2O3\u00a0+ 3H2O B\u00e0i 2 (trang 155 SGK H\u00f3a 12):\u00a0C\u1ea5u […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1305],"tags":[1419,1420],"yoast_head":"\nCh\u01b0\u01a1ng 7 - B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 7 - B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 155 SGK H\u00f3a 12):\u00a0Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng trong d\u00e3y chuy\u1ec3n h\u00f3a sau: Cr \u2192 Cr2O3\u00a0\u2192 Cr2(SO4)3\u00a0\u2192 Cr(OH)3\u00a0\u2192 Cr2O3 L\u1eddi gi\u1ea3i: (1) 4Cr + 3O2\u00a0\u2192 2Cr2O3 (2) Cr2O3\u00a0+ H2SO4\u00a0\u2192 Cr2(SO4)3\u00a0+ H2O (3) Cr2(SO4)3\u00a0+ 6NaOH \u2192 2Cr(OH)3\u00a0+ 3Na2SO4 (4) 2Cr(OH)3\u00a0\u2192 Cr2O3\u00a0+ 3H2O B\u00e0i 2 (trang 155 SGK H\u00f3a 12):\u00a0C\u1ea5u […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam\" \/>\n<meta property=\"article:published_time\" content=\"2018-03-28T15:51:17+00:00\" \/>\n<meta name=\"author\" content=\"H\u00e0 Trang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"H\u00e0 Trang\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/\",\"url\":\"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/\",\"name\":\"Ch\u01b0\u01a1ng 7 - B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom\",\"isPartOf\":{\"@id\":\"https:\/\/lop12.edu.vn\/#website\"},\"datePublished\":\"2018-03-28T15:51:17+00:00\",\"dateModified\":\"2018-03-28T15:51:17+00:00\",\"author\":{\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\"},\"breadcrumb\":{\"@id\":\"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/lop12.edu.vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ch\u01b0\u01a1ng 7 – B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/lop12.edu.vn\/#website\",\"url\":\"https:\/\/lop12.edu.vn\/\",\"name\":\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/lop12.edu.vn\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\",\"name\":\"H\u00e0 Trang\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"caption\":\"H\u00e0 Trang\"},\"url\":\"https:\/\/lop12.edu.vn\/author\/trangvth2\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ch\u01b0\u01a1ng 7 - B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/","og_locale":"en_US","og_type":"article","og_title":"Ch\u01b0\u01a1ng 7 - B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom","og_description":"B\u00e0i 1 (trang 155 SGK H\u00f3a 12):\u00a0Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng trong d\u00e3y chuy\u1ec3n h\u00f3a sau: Cr \u2192 Cr2O3\u00a0\u2192 Cr2(SO4)3\u00a0\u2192 Cr(OH)3\u00a0\u2192 Cr2O3 L\u1eddi gi\u1ea3i: (1) 4Cr + 3O2\u00a0\u2192 2Cr2O3 (2) Cr2O3\u00a0+ H2SO4\u00a0\u2192 Cr2(SO4)3\u00a0+ H2O (3) Cr2(SO4)3\u00a0+ 6NaOH \u2192 2Cr(OH)3\u00a0+ 3Na2SO4 (4) 2Cr(OH)3\u00a0\u2192 Cr2O3\u00a0+ 3H2O B\u00e0i 2 (trang 155 SGK H\u00f3a 12):\u00a0C\u1ea5u […]","og_url":"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/","og_site_name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam","article_published_time":"2018-03-28T15:51:17+00:00","author":"H\u00e0 Trang","twitter_card":"summary_large_image","twitter_misc":{"Written by":"H\u00e0 Trang","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/","url":"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/","name":"Ch\u01b0\u01a1ng 7 - B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom","isPartOf":{"@id":"https:\/\/lop12.edu.vn\/#website"},"datePublished":"2018-03-28T15:51:17+00:00","dateModified":"2018-03-28T15:51:17+00:00","author":{"@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45"},"breadcrumb":{"@id":"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/lop12.edu.vn\/chuong-7-bai-34-crom-va-hop-chat-cua-crom\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lop12.edu.vn\/"},{"@type":"ListItem","position":2,"name":"Ch\u01b0\u01a1ng 7 – B\u00e0i 34: Crom v\u00e0 h\u1ee3p ch\u1ea5t c\u1ee7a crom"}]},{"@type":"WebSite","@id":"https:\/\/lop12.edu.vn\/#website","url":"https:\/\/lop12.edu.vn\/","name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/lop12.edu.vn\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45","name":"H\u00e0 Trang","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","caption":"H\u00e0 Trang"},"url":"https:\/\/lop12.edu.vn\/author\/trangvth2\/"}]}},"_links":{"self":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24307"}],"collection":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/comments?post=24307"}],"version-history":[{"count":2,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24307\/revisions"}],"predecessor-version":[{"id":24309,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24307\/revisions\/24309"}],"wp:attachment":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/media?parent=24307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/categories?post=24307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/tags?post=24307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}