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2. Talotekniikan opintojen keskeiset ammattiaineet liittyv辰t sis辰ilmasto-, ilmastointi-, l辰mmitys- ja j辰辰hdytys- tekniikkaan, energiantuotantoon ja -jakeluun rakennusautomaatioon sek辰 vesihuoltoon.
3. Laajuus: 3 opintopistett辰 Oppimateriaali: Antila, A.-M., ym. Tekniikan kemia , Edita. Oppikirjaan perustuva koulutusohjelmakohtainen teht辰v辰moniste Talotekniikan kemia
4. Talotekniikan kemian opintojen keskeinen sis辰lt旦 liittyy talotekniikan materiaalien ominaisuuksien atomi/molekyytason tarkasteluun (esim. metallien taipuisuus metallisidos- metallien valenssielektronirakenne) korroosioon energiatuotantoon palamisreaktiolla savukaasulaskut
5. Talotekniikan kemia - sis辰lt旦 Atomi ja alkuaineet Kemialliset sidokset Olomuodot Seokset Kemiallinen reaktio Palaminen Hapot ja em辰kset S辰hk旦kemia ja korroosio
6. S辰hk旦kemian sis辰lt旦 J辰nnitesarja S辰hk旦pari Mit辰 on galvaaninen korroosio? Konsentraatiokenno Mit辰 on rakokorroosio? Elektrolyysikenno Mit辰 on s辰hk旦sinkitys? Korroosio
7. Korroosio sis辰lt旦 Ymp辰rist旦olosuhteiden vaikutus korroosioreaktion nopeuteen Pourbaix-diagrammit (pH ja happipitoisuus) Happipitoisuusero Veden kovuus Metallien liitt辰minen toisiinsa Metalliseokset (sinkkikato messingiss辰) Raudan, kuparin ja sinkin korroosio Korroosion esto
9. Suorita koe (1) : Ota pala kuparia (kupariputki) ja upota se Fe 2+ -ioneja sis辰lt辰v辰辰n liuokseen? Mit辰 tapahtuu? Miksi?
10. Fe (1) Rautaputkeen saostuneesta rautasakkakerroksesta liukenee Fe 2+ -ioneja, mutta Cu Fe 2+ Fe 2+ Cu atomit eiv辰t luovuta elektronejaan Fe 2+ -ioneille => KUPARIPUTKI EI KORRODOIDU
11. Suorita koe (2) : Ota pala rautanaula (rautaputki) ja upota se Cu 2+ -ioneja sis辰lt辰v辰辰n liuokseen? Mit辰 tapahtuu? Miksi?
13. (2) Kupariputkeen saostuneesta kerroksesta voi liueta Cu 2+ -ioneja ja Cu 2+ Fe Cu Fe atomit voivat luovuttaa elektronejaan Cu 2+ -ioneille + 2 e - Fe 2+
14. Er辰辰n辰 lauantaiaamuna oli kylpyhuoneemme lattialla vesilammikko. Syyn辰 oli se, ett辰 kupari-putkeen oli liitetty ter辰sputki Ehk辰p辰 he pitiv辰t ruosteisesta vedest辰
15. Korroosio sis辰lt旦 Ymp辰rist旦olosuhteiden vaikutus korroosioreaktion nopeuteen Pourbaix-diagrammit (pH ja happipitoisuus) Happipitoisuusero Veden kovuus Metallien liitt辰minen toisiinsa Metalliseokset (sinkkikato messingiss辰) Raudan, kuparin ja sinkin korroosio Korroosion esto
16. Tai miksi l辰mm旦njohtosysteemeiss辰, joissa k辰ytet辰辰n veden suljettua kiertoa, voidaan k辰ytt辰辰 esim. kupari- tai messinkiliittimi辰 ter辰sputkien kanssa ilman merkitt辰v辰辰 korroosiovaaraa? Miksi rauta s辰ilyy hyvin suljetussa keskusl辰mmitysputkistossa?
17. Keit辰 vett辰 joitakin minuutteja, siirr辰 keitetty vesi koeputkeen, lis辰辰 pari pisaraa fenolftaleiinia, p辰辰lle kerros 旦ljy辰 ja korkki. J辰辰hdyt辰. Vertailukoe: keitt辰m辰t旦n vesi avonaisessa putkessa
20. Fenolftaleiini on indikaattori, joka osoittaa korroosioreaktiossa muodostuneet OH - -ionit punaisena v辰rin辰 遜 O 2 + 2 e - + H 2 O 2 OH - Laboratoriokoe korroosioreaktion osoittamiseksi
#9: -In old houses you can see iron pipes connected with copper pipes - Why there
#11: -Water flows from left to right -There is first iron pipe and after that copper pipe. -On iron pipes there can be iron salts precipitated and when water is flowing through the pipe iron ions can be dissolved from the salts but
#15: -All professional builders know how to connect the pipes - but I found this unlucky story and photo in the internet
#21: -Later well have some lab tests of corrosion in different metals. -Thats why we have to have a method to visualize the end products: Phenolphtalein is