{"id":527,"date":"2020-03-01T19:48:00","date_gmt":"2020-03-01T18:48:00","guid":{"rendered":"http:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/?p=527"},"modified":"2020-03-13T20:10:30","modified_gmt":"2020-03-13T19:10:30","slug":"pluja-dor","status":"publish","type":"post","link":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/2020\/03\/01\/pluja-dor\/","title":{"rendered":"Pluja d&#8217;or i pH"},"content":{"rendered":"\n<p>Aquesta situaci\u00f3 a qu\u00edmica hem fet dos experiments, un era anomenat pluja d&#8217;or i la pr\u00e0ctica  consistia a observar com a partir d&#8217;una reacci\u00f3 de precipitaci\u00f3 \u00e9s formaven dos s\u00f2lids.<\/p>\n\n\n\n<p>Si voleu fer aquest experiment haurem de seguir els seg\u00fcents passos:<\/p>\n\n\n\n<p>Comen\u00e7arem preparant les seg\u00fcents dissolucions en el matr\u00e0s o el vas de precipitats: <\/p>\n\n\n\n<p>I. Dissoluci\u00f3 en aigua de 20 ml de nitrat de plom amb una concentraci\u00f3n de&nbsp;10 g\/l.   II. Dissoluci\u00f3 de 40 ml de iodur de potassi amb una concentraci\u00f3 de 10 g\/l.<\/p>\n\n\n\n<p>Seguidament abocarem el&nbsp; iodur de potassi sobre la dissoluci\u00f3 de nitrat de plom i observarem com es forma un precipitat de color groc gr\u00e0cies als dos reactius. Despr\u00e9s escalfarem el vas amb el precipitat de color groc, utilitzant la meitat o la tercera part d&#8217;aquesta dissoluci\u00f3, fins que el precipitat quedi dissolt. Posteriorment deixarem que la dissoluci\u00f3 es refredi i podrem observar la pluja d\u2019or. Finalment ho abocarem sobre una proveta i observem el resultat final.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/FoM8qX539-MN9m6Jy8b_-uX6YwzEFS7nld_fzgSet794z929KzoPgo3r0OLwEYhwwkWV0wQvlyl0eBhB9DNMtIz6DnwK-n1In0JtLjhyE86O0M9vOEs0WS-VZmu-TO6oD1Dmyboa\" alt=\"\" \/><\/figure>\n\n\n\n<p>El que he apr\u00e8s d&#8217;aquest experiment \u00e9s el concepte de cristal\u00b7litzaci\u00f3, del qual abans de fer la pr\u00e0ctica no tenia ni la m\u00e9s remota idea. <\/p>\n\n\n\n<p class=\"wp-block-gdm-google-drive-embedder-viewer\"><iframe width=\"100%\" height=\"400\" frameborder=\"0\" scrolling=\"https:\/\/docs.google.com\/document\/d\/128wTsBme0YSgbHJl3t1thEXLHSIiGdLZDlwu35QgPPg\/preview?usp=drivesdk\" src=\"https:\/\/docs.google.com\/document\/d\/128wTsBme0YSgbHJl3t1thEXLHSIiGdLZDlwu35QgPPg\/preview?usp=drivesdk\"><\/iframe><\/p>\n\n\n\n<p>L&#8217;altre experiment consistia en mesurar el pH d&#8217;alguns productes quotidians a partir de diferents mesuradors. Aqu\u00ed podeu trobar la taula on es veu el resultat de cada producte amb cada un dels mesuradors<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Subst\u00e0ncia<\/strong><\/td><td><strong>pH<\/strong><strong>(paper tornasol)<\/strong><\/td><td><strong>pH<\/strong><strong>(sonda vernier)<\/strong><\/td><td><strong>Indicador 1<\/strong><strong>(fenolftale\u00efna)<\/strong><\/td><td><strong>Indicador 2<\/strong><strong>(taronja de metil)<\/strong><\/td><td><strong>Car\u00e0cter<\/strong><\/td><\/tr><tr><td><strong>Vinagre<\/strong><\/td><td>4<\/td><td>3,20<\/td><td>Vermell<\/td><td>Transparent<\/td><td>\u00c0cid fort<\/td><\/tr><tr><td><strong>Amon\u00edac<\/strong><\/td><td>11<\/td><td>11,42<\/td><td>Groc<\/td><td>Fuxia<\/td><td>Base fort<\/td><\/tr><tr><td><strong>Iogurt natural<\/strong><\/td><td>7<\/td><td>4,92<\/td><td>Taronja<\/td><td>Transparent<\/td><td>\u00c0cid d\u00e8bil<\/td><\/tr><tr><td><strong>Iogurt de fruits vermells<\/strong><\/td><td>5<\/td><td>4,88<\/td><td>Taronja<\/td><td>Transparent<\/td><td>\u00c0cid d\u00e8bil<\/td><\/tr><tr><td><strong>Suc de llimona concentrat<\/strong><\/td><td>3<\/td><td>2,90<\/td><td>Rosa &#8211; Vermell<\/td><td>Transparent<\/td><td>\u00c0cid fort<\/td><\/tr><tr><td><strong>Suc de pinya<\/strong><\/td><td>4<\/td><td>3,61<\/td><td>Salm\u00f3 &#8211; Vermell<\/td><td>Transparent<\/td><td>\u00c0cid fort<\/td><\/tr><tr><td><strong>Suc de pr\u00e9ssec<\/strong><\/td><td>5<\/td><td>4,35<\/td><td>Vermell &#8211; Taronja<\/td><td>Transparent<\/td><td>\u00c0cid d\u00e8bil<\/td><\/tr><tr><td><strong>Coca cola<\/strong><\/td><td>3<\/td><td>3,34<\/td><td>Vermell<\/td><td>Transparent<\/td><td>\u00c0cid fort<\/td><\/tr><tr><td><strong>Aigua<\/strong><\/td><td>7<\/td><td>7,03<\/td><td>Groc &#8211; Taronja<\/td><td>Transparent<\/td><td>Neutre<\/td><\/tr><tr><td><strong>Lleixiu<\/strong><\/td><td>13<\/td><td>12,76<\/td><td>Groc &#8211; Taronja<\/td><td>Fuxia<\/td><td>Base fort<\/td><\/tr><tr><td><strong>Bicarbonat<\/strong><\/td><td>12<\/td><td>8,83<\/td><td>Taronja<\/td><td>Fuxia<\/td><td>Base d\u00e8bil<\/td><\/tr><tr><td><strong>Salfumant (\u00e0cid clorh\u00eddirt)<\/strong><\/td><td>1<\/td><td>0,34<\/td><td>Vermell<\/td><td>Transparent<\/td><td>\u00c0cid fort<\/td><\/tr><tr><td><strong>Sab\u00f3 de mans<\/strong><\/td><td>8<\/td><td>6,78<\/td><td>Groc<\/td><td>Transparent<\/td><td>\u00c0cid d\u00e8bil<\/td><\/tr><tr><td><strong>Fairy<\/strong><\/td><td>6<\/td><td>6,48<\/td><td>Groc<\/td><td>Transparent<\/td><td>\u00c0cid d\u00e8bil<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n","protected":false},"excerpt":{"rendered":"<p>Aquesta situaci\u00f3 a qu\u00edmica hem fet dos experiments, un era anomenat pluja d&#8217;or i la pr\u00e0ctica consistia a observar com a partir d&#8217;una reacci\u00f3 de precipitaci\u00f3 \u00e9s formaven&#8230;<\/p>\n","protected":false},"author":135,"featured_media":528,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/posts\/527"}],"collection":[{"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/users\/135"}],"replies":[{"embeddable":true,"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/comments?post=527"}],"version-history":[{"count":3,"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/posts\/527\/revisions"}],"predecessor-version":[{"id":534,"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/posts\/527\/revisions\/534"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/media\/528"}],"wp:attachment":[{"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/media?parent=527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/categories?post=527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/institutviladomat.cat\/portfoli\/16bernatjordana\/wp-json\/wp\/v2\/tags?post=527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}