{"id":622,"date":"2026-05-05T04:55:38","date_gmt":"2026-05-05T04:55:38","guid":{"rendered":"https:\/\/79.buffdemo.com\/index.php\/2026\/05\/05\/14-ngay-cap-toc-hoa-thpt-2025-thay-nguyen-anh-phong\/"},"modified":"2026-05-05T07:29:57","modified_gmt":"2026-05-05T07:29:57","slug":"14-ngay-cap-toc-hoa-thpt-2025-thay-nguyen-anh-phong","status":"publish","type":"post","link":"https:\/\/79.buffdemo.com\/index.php\/2026\/05\/05\/14-ngay-cap-toc-hoa-thpt-2025-thay-nguyen-anh-phong\/","title":{"rendered":"14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong"},"content":{"rendered":"<p><a href=\"https:\/\/tailieuonthi.edu.vn\/14-ngay-cap-toc-hoa-thpt-2025-thay-nguyen-anh-phong\/\" target=\"_blank\" rel=\"noopener\">14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong<\/a> s\u1ebd chinh ph\u1ee5c m\u1ecdi d\u1ea1ng c\u00e2u h\u1ecfi V\u1eadn d\u1ee5ng cao m\u00f4n H\u00f3a h\u1ecdc THPT 2025. T\u00e0i li\u1ec7u n\u00e0y t\u1ed5ng h\u1ee3p 14 \u0111\u1ec1 d\u1ef1 \u0111o\u00e1n s\u00e1t v\u1edbi c\u1ea5u tr\u00fac \u0111\u1ec1 thi, gi\u00fap b\u1ea1n b\u1ee9t ph\u00e1 t\u01b0 duy, n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m v\u00e0 t\u1ef1 tin gi\u00e0nh \u0111i\u1ec3m cao trong k\u1ef3 thi s\u1eafp t\u1edbi. H\u00e3y c\u00f9ng <a href=\"https:\/\/tailieuonthi.edu.vn\/\" rel=\"noopener\" target=\"_blank\">Tailieuonthi<\/a> tham kh\u1ea3o t\u00e0i li\u1ec7u \u0111\u1ec3 thay \u0111\u1ed5i t\u01b0 duy \u2013 b\u1ee9t ph\u00e1 th\u00e0nh c\u00f4ng!<\/p>\n<h2>N\u1ed9i dung 14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong<\/h2>\n<p>T\u00e0i li\u1ec7u 14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong l\u00e0 m\u1ed9t b\u1ed9 \u0111\u1ec1 luy\u1ec7n thi \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u00fap h\u1ecdc sinh \u00f4n t\u1eadp v\u00e0 l\u00e0m quen v\u1edbi c\u00e1c d\u1ea1ng c\u00e2u h\u1ecfi v\u1eadn d\u1ee5ng cao (VDC) trong m\u00f4n H\u00f3a h\u1ecdc cho k\u1ef3 thi THPT n\u0103m 2025. N\u1ed9i dung ch\u00ednh bao g\u1ed3m:<\/p>\n<p>14 \u0111\u1ec1 d\u1ef1 \u0111o\u00e1n v\u1eadn d\u1ee5ng cao: \u0110\u00e2y l\u00e0 ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a t\u00e0i li\u1ec7u. M\u1ed7i ng\u00e0y trong kh\u00f3a h\u1ecdc 14 ng\u00e0y s\u1ebd t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed9t \u0111\u1ec1 d\u1ef1 \u0111o\u00e1n. C\u00e1c \u0111\u1ec1 n\u00e0y \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 bao qu\u00e1t c\u00e1c ki\u1ebfn th\u1ee9c v\u00e0 k\u1ef9 n\u0103ng c\u1ea7n thi\u1ebft cho c\u00e2u h\u1ecfi VDC trong \u0111\u1ec1 thi THPT Qu\u1ed1c gia.<\/p>\n<ul>\n<li>C\u1ea5u tr\u00fac \u0111\u1ec1: M\u1ed7i \u0111\u1ec1 c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c c\u00e2u h\u1ecfi thu\u1ed9c nhi\u1ec1u chuy\u00ean \u0111\u1ec1 kh\u00e1c nhau c\u1ee7a H\u00f3a h\u1ecdc, t\u1eeb H\u00f3a h\u1eefu c\u01a1, H\u00f3a v\u00f4 c\u01a1, \u0111\u1ebfn H\u00f3a l\u00fd, v\u00e0 c\u00e1c b\u00e0i to\u00e1n t\u1ed5ng h\u1ee3p.<\/li>\n<li>D\u1ea1ng b\u00e0i t\u1eadp: C\u00e1c c\u00e2u h\u1ecfi t\u1eadp trung v\u00e0o d\u1ea1ng v\u1eadn d\u1ee5ng cao, \u0111\u00f2i h\u1ecfi h\u1ecdc sinh ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n t\u00edch, t\u1ed5ng h\u1ee3p, suy lu\u1eadn v\u00e0 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 ph\u1ee9c t\u1ea1p.<\/li>\n<li>H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0110\u00e1p \u00e1n: M\u1eb7c d\u00f9 kh\u00f4ng th\u1ec3 xem to\u00e0n b\u1ed9 n\u1ed9i dung, nh\u01b0ng v\u1edbi b\u1ea3n ch\u1ea5t c\u1ee7a m\u1ed9t t\u00e0i li\u1ec7u luy\u1ec7n \u0111\u1ec1, kh\u1ea3 n\u0103ng cao t\u00e0i li\u1ec7u s\u1ebd cung c\u1ea5p \u0111\u00e1p \u00e1n chi ti\u1ebft ho\u1eb7c h\u01b0\u1edbng d\u1eabn gi\u1ea3i t\u1eebng c\u00e2u h\u1ecfi \u0111\u1ec3 h\u1ecdc sinh c\u00f3 th\u1ec3 t\u1ef1 ki\u1ec3m tra v\u00e0 r\u00fat kinh nghi\u1ec7m.<\/li>\n<\/ul>\n<p>M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi trong \u0111\u1ec1 s\u1ed1 1:<\/p>\n<p>NAP 1: Chu\u1ea9n \u0111\u1ed9 mu\u1ed1i Fe(II) b\u1eb1ng dung d\u1ecbch thu\u1ed1c t\u00edm  KMnO\u2084 .<\/p>\n<p>Chu\u1ea9n b\u1ecb:<\/p>\n<ul>\n<li>Ho\u00e1 ch\u1ea5t: c\u00e1c dung d\u1ecbch:  KMnO\u2084   C\u2081  (M),  H\u2082SO\u2084  10%,  FeSO\u2084   C\u2082  (M).<\/li>\n<li>D\u1ee5ng c\u1ee5: pipette 5 mL, burette 25 mL, b\u00ecnh tam gi\u00e1c 100 mL, \u1ed1ng \u0111ong 10 mL, b\u00ecnh tia n\u01b0\u1edbc c\u1ea5t, gi\u00e1 \u0111\u1ee1, k\u1eb9p c\u0103ng cua.<\/li>\n<\/ul>\n<p>C\u00e1ch ti\u1ebfn h\u00e0nh:<\/p>\n<ul>\n<li>D\u00f9ng pipette l\u1ea5y  V\u2081  mL dung d\u1ecbch  FeSO\u2084  cho v\u00e0o b\u00ecnh tam gi\u00e1c; d\u00f9ng \u1ed1ng \u0111ong l\u1ea5y th\u00eam v\u00e0o b\u00ecnh tam gi\u00e1c  V\u2081  mL dung d\u1ecbch  H\u2082SO\u2084  10%.<\/li>\n<li>Cho dung d\u1ecbch  KMnO\u2084  v\u00e0o burette, \u0111i\u1ec1u ch\u1ec9nh th\u1ec3 t\u00edch dung d\u1ecbch trong burette v\u1ec1 m\u1ee9c 0. M\u1edf kho\u00e1 burette, nh\u1ecf t\u1eebng gi\u1ecdt dung d\u1ecbch  KMnO\u2084  xu\u1ed1ng b\u00ecnh tam gi\u00e1c, l\u1eafc \u0111\u1ec1u.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"286\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-ngay-cap-toc-hoa-thpt-2025-thay-nguyen-anh-phong-1.jpg\" width=\"416\"\/><br \/>\na. Ph\u1ea3n \u1ee9ng chu\u1ea9n \u0111\u1ed9 l\u00e0  KMnO\u2084 + FeSO\u2084 + H\u2082SO\u2084 \u2192 MnSO\u2084 + K\u2082SO\u2084 + Fe\u2082(SO\u2084)\u2083 + H\u2082O  v\u1edbi t\u1ed5ng h\u1ec7 s\u1ed1 t\u1ed1i gi\u1ea3n c\u1ee7a c\u00e1c ch\u1ea5t trong ph\u01b0\u01a1ng tr\u00ecnh ph\u1ea3n \u1ee9ng l\u00e0 36.<br \/>\nb. Khi dung d\u1ecbch trong b\u00ecnh tam gi\u00e1c xu\u1ea5t hi\u1ec7n m\u00e0u h\u1ed3ng b\u1ec1n trong kho\u1ea3ng 20 gi\u00e2y th\u00ec d\u1eebng chu\u1ea9n \u0111\u1ed9, ghi l\u1ea1i th\u1ec3 t\u00edch dung d\u1ecbch  KMnO\u2084  l\u00e0  V\u2082 . Ti\u1ebfn h\u00e0nh chu\u1ea9n \u0111\u1ed9 3 l\u1ea7n.<br \/>\nc. C\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n ph\u00e9p chu\u1ea9n \u0111\u1ed9 tr\u00ean b\u1eb1ng c\u00e1ch \u0111\u1ef1ng dung d\u1ecbch  KMnO\u2084  \u1edf b\u00ecnh tam gi\u00e1c v\u00e0 dung d\u1ecbch  FeSO\u2084  trong m\u00f4i tr\u01b0\u1eddng acid \u1edf burette c\u0169ng cho k\u1ebft qu\u1ea3 t\u01b0\u01a1ng t\u1ef1.<br \/>\nd. C\u1ea7n x\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng nguy\u00ean t\u1ed1 s\u1eaft trong m\u1ed9t vi\u00ean thu\u1ed1c b\u1ed5 sung s\u1eaft b\u1eb1ng dung d\u1ecbch  KMnO\u2084 . Vi\u00ean thu\u1ed1c n\u1eb7ng 250 mg ch\u1ee9a l\u01b0\u1ee3ng s\u1eaft (iron) ch\u1ec9 \u1edf d\u1ea1ng mu\u1ed1i Fe(II) c\u00f9ng m\u1ed9t s\u1ed1 ch\u1ea5t kh\u00e1c. K\u1ebft qu\u1ea3 ki\u1ec3m nghi\u1ec7m th\u1ea5y l\u01b0\u1ee3ng Fe(II) trong vi\u00ean n\u00e0y ph\u1ea3n \u1ee9ng v\u1eeba \u0111\u1ee7 v\u1edbi 10,0 mL dung d\u1ecbch  KMnO\u2084  0,04 M. Ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a nguy\u00ean t\u1ed1 s\u1eaft trong vi\u00ean thu\u1ed1c tr\u00ean l\u00e0 44,8%.<\/p>\n<p>NAP 2: Khi ngu\u1ed3n n\u01b0\u1edbc t\u1ef1 nhi\u00ean c\u00f3 h\u00e0m l\u01b0\u1ee3ng s\u1eaft v\u01b0\u1ee3t qu\u00e1 ti\u00eau chu\u1ea9n cho ph\u00e9p (n\u01b0\u1edbc s\u1ebd c\u00f3 m\u00e0u v\u00e0ng v\u00e0 m\u00f9i tanh) s\u1ebd c\u1ea7n ph\u1ea3i x\u1eed l\u00ed \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1eaft. M\u1ed9t trong nh\u1eefng c\u00e1ch lo\u1ea1i s\u1eaft kh\u1ecfi n\u01b0\u1edbc l\u00e0 d\u00f9ng v\u00f4i t\u00f4i v\u1edbi l\u01b0\u1ee3ng v\u1eeba \u0111\u1ee7, sau \u0111\u00f3 cho ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed, k\u1ebft t\u1ee7a  Fe(OH)\u2082  t\u1ea1o th\u00e0nh v\u00e0 \u0111\u01b0\u1ee3c t\u00e1ch ra \u1edf b\u1ec3 l\u1eafng. M\u1ed9t m\u1eabu n\u01b0\u1edbc nhi\u1ec5m ph\u00e8n c\u00f3 h\u00e0m l\u01b0\u1ee3ng s\u1eaft cao g\u1ea5p 28 l\u1ea7n, so v\u1edbi ng\u01b0\u1ee1ng cho ph\u00e9p quy \u0111\u1ecbnh l\u00e0 0,30 mg\/L (QCVN 01 \u2013 1:2018\/BYT). Gi\u1ea3 thi\u1ebft s\u1eaft trong m\u1eabu n\u01b0\u1edbc tr\u00ean ch\u1ec9 t\u1ed3n t\u1ea1i \u1edf hai d\u1ea1ng l\u00e0  Fe\u00b3\u207a  v\u00e0  Fe\u00b2\u207a  v\u1edbi t\u1ec9 l\u1ec7 mol  Fe\u00b3\u207a : Fe\u00b2\u207a = 3 : 1 . C\u1ea7n t\u1ed1i thi\u1ec3u bao nhi\u00eau kg (l\u00e0m tr\u00f2n \u0111\u1ebfn h\u00e0ng ph\u1ea7n m\u01b0\u1eddi)  Ca(OH)\u2082  \u0111\u1ec3 k\u1ebft t\u1ee7a ho\u00e0n to\u00e0n l\u01b0\u1ee3ng s\u1eaft c\u00f3 trong 1000  m\u00b3  n\u01b0\u1edbc tr\u00ean.<\/p>\n<h2>T\u1ea3i 14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong<\/h2>\n<p>14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u00f4n t\u1eadp chuy\u00ean s\u00e2u, cung c\u1ea5p c\u00e1c \u0111\u1ec1 luy\u1ec7n thi ch\u1ea5t l\u01b0\u1ee3ng cao, gi\u00fap h\u1ecdc sinh chu\u1ea9n b\u1ecb t\u1ed1t nh\u1ea5t cho ph\u1ea7n v\u1eadn d\u1ee5ng cao trong k\u1ef3 thi H\u00f3a h\u1ecdc THPT 2025. T\u1ea3i ngay b\u1ed9 <a href=\"https:\/\/tailieuonthi.edu.vn\/lop-12\/hoa-12\/\" rel=\"noopener\" target=\"_blank\">t\u00e0i li\u1ec7u h\u00f3a 12<\/a> sau.<\/p>\n<p><img loading=\"lazy\" alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00001.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00002.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00003.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00004.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00005.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00006.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00007.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00008.jpg\" width=\"800\"\/> <img alt=\"\" class=\"aligncenter\" decoding=\"async\" height=\"1131\" loading=\"lazy\" src=\"https:\/\/tailieuonthi.edu.vn\/wp-content\/uploads\/2025\/06\/14-DE-DU-DOAN-VDC-full-bia-page-00009.jpg\" width=\"800\"\/><\/p>\n<p><a class=\"custom-button\" href=\"https:\/\/drive.google.com\/file\/d\/1GVrFqATylc1C3bERxeJbeqk7qxdsFYoI\/view\" rel=\"nofollow noopener\" target=\"_blank\">T\u1ea3i 14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong<\/a><\/p>\n<p>\u0110\u00e2y l\u00e0 b\u1ea3n PDF \u0111\u00f4i khi s\u1ebd c\u00f3 sai s\u00f3t. N\u1ebfu c\u00f3 \u0111i\u1ec1u ki\u1ec7n, c\u00e1c b\u1ea1n n\u00ean mua b\u1ea3n g\u1ed1c \u0111\u1ec3 c\u00f3 tr\u1ea3i nghi\u1ec7m t\u1ed1t nh\u1ea5t v\u00e0 \u1ee7ng h\u1ed9 t\u00e1c gi\u1ea3 nh\u00e9.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>14 ng\u00e0y c\u1ea5p t\u1ed1c H\u00f3a THPT 2025 Th\u1ea7y Nguy\u1ec5n Anh Phong s\u1ebd chinh ph\u1ee5c m\u1ecdi d\u1ea1ng c\u00e2u h\u1ecfi V\u1eadn d\u1ee5ng cao m\u00f4n H\u00f3a h\u1ecdc THPT 2025. T\u00e0i li\u1ec7u n\u00e0y t\u1ed5ng h\u1ee3p 14 \u0111\u1ec1 d\u1ef1 \u0111o\u00e1n s\u00e1t v\u1edbi c\u1ea5u tr\u00fac \u0111\u1ec1 thi, gi\u00fap b\u1ea1n b\u1ee9t ph\u00e1 t\u01b0 duy, n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m v\u00e0 t\u1ef1 [&#8230;]\n","protected":false},"author":1,"featured_media":1821,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[29,45],"class_list":["post-622","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hoa-12","tag-hoa-12","tag-thay-nguyen-anh-phong"],"_links":{"self":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/comments?post=622"}],"version-history":[{"count":1,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/622\/revisions"}],"predecessor-version":[{"id":1822,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/622\/revisions\/1822"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/media\/1821"}],"wp:attachment":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/media?parent=622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/categories?post=622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/tags?post=622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}