{"id":2741,"date":"2018-09-03T23:49:33","date_gmt":"2018-09-04T04:49:33","guid":{"rendered":"http:\/\/academia.utp.edu.co\/quimica2\/?p=2741"},"modified":"2022-07-18T16:19:45","modified_gmt":"2022-07-18T21:19:45","slug":"practica-no-8","status":"publish","type":"post","link":"https:\/\/academia.utp.edu.co\/quimica2\/2018\/09\/03\/practica-no-8\/","title":{"rendered":"Gu\u00eda No.8. La constante de equilibrio de un \u00e1cido d\u00e9bil."},"content":{"rendered":"<p style=\"text-align: center\"><span style=\"color: #800080\"><strong><span style=\"font-size: 18pt\">LA CONSTANTE DE EQUILIBRIO DE UN \u00c1CIDO D\u00c9BIL<\/span><\/strong><\/span><\/p>\n<p><span style=\"color: #993366\"><strong>OBJETIVO<\/strong><\/span><\/p>\n<p>Determinar experimentalmente la constante de equilibrio, K<sub>a<\/sub> para la disociaci\u00f3n de un \u00e1cido d\u00e9bil.<\/p>\n<p style=\"text-align: center\"><span style=\"color: #993366\"><strong>PH-METRO<\/strong><\/span><\/p>\n<p>Consta esencialmente de dos partes: los electrodos y el potenci\u00f3metro propiamente dicho. Los electrodos m\u00e1s utilizados son, en general, el de calomelanos, como electrodo de referencia y el de vidrio como electrodo del tipo llamado combinado, que lleva en s\u00ed incluidos tanto el electrodo de referencia como el de medida,. Esta simplificaci\u00f3n supone sensibles ventajas, ya que, al s\u00f3lo precisar la introducci\u00f3n en la soluci\u00f3n problema de un electrodo, permite, entre otras cosas, la medici\u00f3n del pH en vol\u00famenes muy peque\u00f1os. El potenci\u00f3metro mide la diferencia de potencial que se establece entre los dos electrodos y nos indica directamente el pH de la soluci\u00f3n.<\/p>\n<p><a href=\"https:\/\/academia.utp.edu.co\/quimica2\/files\/2018\/09\/hanna-instruments-deutschland-gmbh-ph-metro-hi-5221-02-102392_966706.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2751 aligncenter\" src=\"https:\/\/academia.utp.edu.co\/quimica2\/files\/2018\/09\/hanna-instruments-deutschland-gmbh-ph-metro-hi-5221-02-102392_966706-281x300.jpg\" alt=\"\" width=\"281\" height=\"300\" srcset=\"https:\/\/academia.utp.edu.co\/quimica2\/files\/2018\/09\/hanna-instruments-deutschland-gmbh-ph-metro-hi-5221-02-102392_966706-281x300.jpg 281w, https:\/\/academia.utp.edu.co\/quimica2\/files\/2018\/09\/hanna-instruments-deutschland-gmbh-ph-metro-hi-5221-02-102392_966706-768x821.jpg 768w, https:\/\/academia.utp.edu.co\/quimica2\/files\/2018\/09\/hanna-instruments-deutschland-gmbh-ph-metro-hi-5221-02-102392_966706-250x267.jpg 250w, https:\/\/academia.utp.edu.co\/quimica2\/files\/2018\/09\/hanna-instruments-deutschland-gmbh-ph-metro-hi-5221-02-102392_966706.jpg 900w\" sizes=\"auto, (max-width: 281px) 100vw, 281px\" \/><\/a><\/p>\n<p style=\"text-align: center\"><span style=\"font-size: 14pt\"><strong><span style=\"color: #800080\">Calibraci\u00f3n del pH-metro<\/span><\/strong><\/span><\/p>\n<div class=\"video-container\"><iframe loading=\"lazy\" title=\"Calibrado del pH-metro Modelo Crison pH Meter Basic 20 |  | UPV\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/_6rDNwxmejA?feature=oembed&#038;wmode=opaque\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LA CONSTANTE DE EQUILIBRIO DE UN \u00c1CIDO D\u00c9BIL OBJETIVO Determinar experimentalmente la constante de equilibrio, Ka para la disociaci\u00f3n de un \u00e1cido d\u00e9bil. PH-METRO Consta esencialmente de dos partes: los electrodos y el potenci\u00f3metro&#46;&#46;&#46;<\/p>\n","protected":false},"author":301,"featured_media":2761,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2741","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guias-de-laboratorio"],"_links":{"self":[{"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/posts\/2741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/users\/301"}],"replies":[{"embeddable":true,"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/comments?post=2741"}],"version-history":[{"count":3,"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/posts\/2741\/revisions"}],"predecessor-version":[{"id":4211,"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/posts\/2741\/revisions\/4211"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/media\/2761"}],"wp:attachment":[{"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/media?parent=2741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/categories?post=2741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/academia.utp.edu.co\/quimica2\/wp-json\/wp\/v2\/tags?post=2741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}