{"id":1276,"date":"2024-02-23T08:12:42","date_gmt":"2024-02-23T08:12:42","guid":{"rendered":"https:\/\/nbtchemical.com\/?post_type=product&#038;p=1276"},"modified":"2024-02-23T08:12:42","modified_gmt":"2024-02-23T08:12:42","slug":"h3po4-axit-photphoric","status":"publish","type":"product","link":"https:\/\/vinachemistry.com\/vi\/product\/h3po4-axit-photphoric\/","title":{"rendered":"H3PO4 \u2013 Axit Photphoric"},"content":{"rendered":"<p>C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc :\u00a0<strong>H3PO4<\/strong><br \/>\nT\u00ean h\u00f3a h\u1ecdc :\u00a0<strong>Acid Phosphoric; H3PO4<\/strong><br \/>\nXu\u1ea5t x\u1ee9:\u00a0<strong>Vi\u1ec7t Nam, H\u00e0n Qu\u1ed1c, Trung Qu\u1ed1c<\/strong><br \/>\nQui c\u00e1ch :<strong>\u00a035kg\/ can<\/strong><\/p>\n<p><strong>T\u00ednh ch\u1ea5t v\u1eadt l\u00fd:<\/strong><br \/>\nAxit photphoric l\u00e0 ch\u1ea5t r\u1eafn tinh th\u1ec3 kh\u00f4ng m\u00e0u, kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 1,87 g\/cm3; nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y = 42,350C (d\u1ea1ng H3PO4.H2O c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y = 29,320C); ph\u00e2n hu\u1ef7 \u1edf 2130C. Tan trong etanol, n\u01b0\u1edbc (v\u1edbi b\u1ea5t k\u00ec t\u1ec9 l\u1ec7 n\u00e0o). Trong c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a H3PO4 g\u1ed3m c\u00f3 nh\u1eefng nh\u00f3m t\u1ee9 di\u1ec7n PO4. Li\u00ean k\u1ebft v\u1edbi nhau b\u1eb1ng li\u00ean k\u1ebft hidro. C\u1ea5u tr\u00fac \u0111\u00f3 v\u1eabn c\u00f2n \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i trong dung d\u1ecbch \u0111\u1eadm \u0111\u1eb7c c\u1ee7a axit \u1edf trong n\u01b0\u1edbc v\u00e0 l\u00e0m cho dung d\u1ecbch \u0111\u00f3 s\u00e1nh gi\u1ed1ng nh\u01b0 n\u01b0\u1edbc \u0111\u01b0\u1eddng.<\/p>\n<p>Axit photphoric tan trong n\u01b0\u1edbc \u0111\u00f3 \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch b\u1eb1ng s\u1ef1 t\u1ea1o th\u00e0nh li\u00ean k\u1ebft hidro gi\u1eefa nh\u1eefng ph\u00e2n t\u1eed H3PO4 v\u00e0 nh\u1eefng ph\u00e2n t\u1eed H2O.<\/p>\n<p><strong>T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc:<\/strong><br \/>\nTrong ph\u00e2n t\u1eed axit photphoric P \u1edf m\u1ee9c oxi h\u00f3a +5 b\u1ec1n n\u00ean axit photphoric kh\u00f3 b\u1ecb kh\u1eed, kh\u00f4ng c\u00f3 t\u00ednh oxi h\u00f3a nh\u01b0 axit nitric. Khi \u0111un n\u00f3ng d\u1ea7n \u0111\u1ebfn 260oC, axit photphoric m\u1ea5t b\u1edbt n\u01b0\u1edbc, bi\u1ebfn th\u00e0nh axit \u0111iphotphoric (H4P2O7); \u1edf 3000C, bi\u1ebfn th\u00e0nh axit metaphotphoric (HPO3). Axit photphoric l\u00e0 axit ba n\u1ea5c c\u00f3 \u0111\u1ed9 m\u1ea1nh trung b\u00ecnh. H\u1eb1ng s\u1ed1 axit \u1edf 250C c\u00f3 c\u00e1c gi\u00e1 tr\u1ecb K1 = 7.10\u22123, K2 = 8.10\u22126, K3 = 4.10\u221213. Dung d\u1ecbch axit photphoric c\u00f3 nh\u1eefng t\u00ednh ch\u1ea5t chung c\u1ee7a axit nh\u01b0 \u0111\u1ed5i m\u00e0 qu\u1ef3 t\u00edm th\u00e0nh \u0111\u1ecf. T\u00e1c d\u1ee5ng v\u1edbi oxit bazo, bazo, mu\u1ed1i, kim lo\u1ea1i. Khi t\u00e1c d\u1ee5ng v\u1edbi oxit bazo ho\u1eb7c bazo. T\u00f9y theo l\u01b0\u1ee3ng ch\u1ea5t t\u00e1c d\u1ee5ng m\u00e0 s\u1ea3n ph\u1ea9m l\u00e0 mu\u1ed1i trung h\u00f2a, mu\u1ed1i axit ho\u1eb7c h\u1ed7n h\u1ee3p mu\u1ed1i.<\/p>\n<p><strong>\u0110i\u1ec1u ch\u1ebf\u00a0<\/strong><br \/>\nTrong c\u00f4ng nghi\u1ec7p, \u0111i\u1ec1u ch\u1ebf H3PO4 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p tr\u00edch li (ph\u00e2n hu\u1ef7 qu\u1eb7ng photphorit ho\u1eb7c qu\u1eb7ng aptit b\u1eb1ng axit sunfuric \u0111\u1eb7c. Tuy nhi\u00ean \u0111i\u1ec1u ch\u1ebf b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y thu \u0111\u01b0\u1ee3c axit photphoric kh\u00f4ng tinh khi\u1ebft, c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p). \u0110\u1ec3 thu \u0111\u01b0\u1ee3c H3PO4 c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao h\u01a1n v\u00e0 n\u1ed3ng \u0111\u1ed9 cao h\u01a1n. Ng\u01b0\u1eddi ta \u0111i\u1ec1u ch\u1ebf b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t. Kh\u1eed qu\u1eb7ng photphorit, apatit \u0111\u1ebfn P, oxi ho\u00e1 P th\u00e0nh P2O5, h\u1ea5p th\u1ee5 b\u1eb1ng n\u01b0\u1edbc<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc :\u00a0H3PO4 T\u00ean h\u00f3a h\u1ecdc :\u00a0Acid Phosphoric; H3PO4 Xu\u1ea5t x\u1ee9:\u00a0Vi\u1ec7t Nam, H\u00e0n Qu\u1ed1c, Trung Qu\u1ed1c Qui c\u00e1ch :\u00a035kg\/ &#8230;<\/p>\n","protected":false},"featured_media":1277,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[39],"product_tag":[],"class_list":{"0":"post-1276","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-hoa-chat-xi-ma","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product\/1276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/comments?post=1276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/media\/1277"}],"wp:attachment":[{"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/media?parent=1276"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product_cat?post=1276"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/vinachemistry.com\/vi\/wp-json\/wp\/v2\/product_tag?post=1276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}