{"id":347,"date":"2022-10-28T22:44:15","date_gmt":"2022-10-28T22:44:15","guid":{"rendered":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/?p=347"},"modified":"2023-05-31T12:08:59","modified_gmt":"2023-05-31T12:08:59","slug":"sugisene-keemia-praks-taltechis","status":"publish","type":"post","link":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/2022\/10\/28\/sugisene-keemia-praks-taltechis\/","title":{"rendered":"S\u00fcgisene keemia praks TalTechis"},"content":{"rendered":"<p><span style=\"font-weight: 400;font-size: 12pt;font-family: 'times new roman', times, serif\">K\u00f5igile keemia valiktunni osalistele anti valik teha praksi s\u00fcgisvaheaja kahel esimesel p\u00e4eval TalTechis, m\u00f5lemal p\u00e4eval oli orgos\u00fcntees.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;font-size: 12pt;font-family: 'times new roman', times, serif\">Esimesel p\u00e4eval oli estri, nimelt 3-met\u00fc\u00fclbut\u00fc\u00fcletanaati ehk isoam\u00fc\u00fclatsetaati s\u00fcntees. S\u00fcnteesi v\u00e4ltel kuumutasime kolbi, milles oli \u00e4\u00e4dikhappe ja 3-met\u00fc\u00fcl-1-butanooli ehk isoam\u00fc\u00fclalkoholi segu koos veega. Sinna oli \u00fchendatud veekogur ja p\u00fcstjahuti, et saada lahti veest, mis oli segus. Kui saime veest lahti, puhastasime veelgi seda segu kasutades jaotuslehtrit ning l\u00f5puks kontrollisime selle puhtust l\u00e4bi lihtdestillatsiooni.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;font-size: 12pt;font-family: 'times new roman', times, serif\">Teisel p\u00e4eval ootas meid \u00fche ketooni, dibensaalatsetooni s\u00fcntees, kasutades bensaldeh\u00fc\u00fcdi ja atsetooni. Algul oli meie ees naatriumh\u00fcdroksiidi ja etanooli vesilahus, seda lahust segasime magnetsegajapulgaga magnetpliidil kolmekaelalises kolvis, kuhu oli \u00fchendatud \u00f5hujahuti, termomeeter ja tilklehter, milles oli bensaldeh\u00fc\u00fcdi ja atsetooni segu. Sellele lahusele lisasime segamise v\u00e4ltel tilklehtris oleva segu ning tekkis kollase sademega h\u00e4gune lahus, mida seej\u00e4rel filtreerisime ja antud sademe viisime \u00fcle et\u00fc\u00fcletanaadi lahusesse \u00fcmberkristalliseerimiseks. L\u00f5puks filtreerisime veel kord seda lahust ning saadud kristallide puhtust kontrollisime, kasutades \u00f5hukese kihi kromatograafiat.<\/span><\/p>\n<p><span style=\"font-size: 12pt;font-family: 'times new roman', times, serif\">Praks oli v\u00e4ga huvitav, suur ait\u00e4h, \u00f5petaja Martin Saar!<\/span><\/p>\n<figure id=\"attachment_348\" aria-describedby=\"caption-attachment-348\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-348\" style=\"font-family: 'times new roman', times, serif\" src=\"http:\/\/www.real.edu.ee\/ajaveeb\/139a\/files\/2022\/10\/Kasuta-seda-oma-225x300.jpg\" alt=\"\" width=\"500\" height=\"667\" srcset=\"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/files\/2022\/10\/Kasuta-seda-oma-225x300.jpg 225w, https:\/\/www.real.edu.ee\/ajaveeb\/139a\/files\/2022\/10\/Kasuta-seda-oma-768x1024.jpg 768w, https:\/\/www.real.edu.ee\/ajaveeb\/139a\/files\/2022\/10\/Kasuta-seda-oma-1152x1536.jpg 1152w, https:\/\/www.real.edu.ee\/ajaveeb\/139a\/files\/2022\/10\/Kasuta-seda-oma-1536x2048.jpg 1536w, https:\/\/www.real.edu.ee\/ajaveeb\/139a\/files\/2022\/10\/Kasuta-seda-oma-scaled.jpg 1920w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption id=\"caption-attachment-348\" class=\"wp-caption-text\"><span style=\"font-size: 10pt;font-family: 'times new roman', times, serif;color: #808080\">P\u00e4rtel ja Ardi valmistamas 2,4,6-trinitrotolueeni\ud83e\udd2b. Allikas: Erakogu. <\/span><\/figcaption><\/figure>\n<p><span style=\"font-size: 12pt;font-family: 'times new roman', times, serif\">Autor: Arthur Harri Jaakko Antila<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>K\u00f5igile keemia valiktunni osalistele anti valik teha praksi s\u00fcgisvaheaja kahel esimesel p\u00e4eval TalTechis, m\u00f5lemal p\u00e4eval oli orgos\u00fcntees.\u00a0 Esimesel p\u00e4eval oli estri, nimelt 3-met\u00fc\u00fclbut\u00fc\u00fcletanaati ehk isoam\u00fc\u00fclatsetaati s\u00fcntees. S\u00fcnteesi v\u00e4ltel kuumutasime kolbi, milles oli \u00e4\u00e4dikhappe ja 3-met\u00fc\u00fcl-1-butanooli ehk isoam\u00fc\u00fclalkoholi segu koos veega. Sinna oli \u00fchendatud veekogur ja p\u00fcstjahuti, et saada lahti veest, mis oli segus. Kui saime [&hellip;]<\/p>\n","protected":false},"author":194,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-347","post","type-post","status-publish","format-standard","hentry","category-11-klass"],"_links":{"self":[{"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/posts\/347","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/users\/194"}],"replies":[{"embeddable":true,"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/comments?post=347"}],"version-history":[{"count":4,"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/posts\/347\/revisions"}],"predecessor-version":[{"id":940,"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/posts\/347\/revisions\/940"}],"wp:attachment":[{"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/media?parent=347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/categories?post=347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.real.edu.ee\/ajaveeb\/139a\/wp-json\/wp\/v2\/tags?post=347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}