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If we change the conditions under which a system is in equilibrium, the system will reset spontaneously looking counteract or minimize the maximum disturbance suffered. How about counting with the help of French chemist Henri Le Chatelier to discover how to protect the hardest part of your body? Alright ... But who is Le Chatelier? Best, who was Le Chatelier? Henri Le Chatelier, as well as chemical, was a metallurgical engineer and university professor with several books on metallurgy, cement, glass, fuel and explosives. Was studying chemical reactions that realized it was possible to predict the direction of movement of chemical equilibria. So he created what is now known as Le Chatelier's Principle: But that "business" is this? This is Greek, Latin or ...? Let's translate. ACTIVITY To facilitate, perform the following experiment. You will notice that the chemical balance may change with changes in concentration, temperature and pressure (according to the principle of Le Chatelier). Prepare solution : Place 6 mL of water in a test tube and add a few crystals of potassium chromate (K CrO Shake. Separate quantities of the solution into three test tubes. Tag for identification tubes (1, 2, 3). Prepare solution in a similar manner to the solution , now using potassium dichromate Cr The Observe the color of each solution: dichromate anion (Cr The ) and anion chromate (CrO Note. Leave a tube of each solution to be reserved for color reference (control). Put 10 drops of NaOH in tubes A-2 and B-2. Shake, observe and note the color. Put 10 drops of HCl in tubes A-3 and B-3. Shake, observe and note the color. At the same tube A-3 insert 10 drops of NaOH. Shake, observe and record. Again the tube A-3 put 10gotas HCl. Shake, observe and record (you can continue indefinitely putting HCl and NaOH). Construct a table to show the results. Note: to make this experiment more interesting, you can accomplish it with the aid of an overhead projector and petri dishes replacing the tubes.
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Ako promijenimo uvjete pod kojima sustav je u ravnoteži, sustav će se ponovno spontano potrazi suzbiti ili minimalizirati najveća smetnja pretrpio. Kako o tome kako bi potražiti pomoć francuskog kemičar Henri Le Chatelierov otkriti kako bi zaštitili najteži dio svog tijela? Dobro ... Ali tko je Le Chatelierov? Best, koji je bio Le Chatelierov? Henri Le Chatelierov, kao i kemijska, metalurška bio inženjer i sveučilišni profesor s nekoliko knjiga o metalurgije, cementa, stakla, goriva i eksploziva. Je li studiranje kemijske reakcije koje je shvatio da je moguće predvidjeti smjer kretanja kemijske ravnoteže. Dakle, on je stvorio ono što je danas poznato kao Le Chatelierov principu: No, da je "posao" je ovo? Ovo je grčki i latinski, ili ...? "U redu". Idemo prijevod. AKTIVNOST Da bi se olakšalo, izvedite sljedeći eksperiment. Primijetit ćete da su kemijske ravnoteže može se mijenjati s promjenama koncentracije, temperature i tlaka (prema načelu Le Chatelierov). Pripremite otopinu : Mjesto 6 ml vode u epruvetu i dodajte nekoliko kristali kalijevog kromata (K Cro Shake. Odvojeni količine otopine u tri epruvete. Oznaka za identifikaciju cijevi (1, 2, 3). Pripremite rješenje na sličan način na rješenje , sada pomoću kalijevog dikromata Cr Promatrajte boju svako rješenje: dikromat anion (Cr ) i aniona kromat (CRO Napomena. Ostavite tubu svako rješenje biti rezerviran za boje referencu (kontrola). Mu 10 kapi NaOH u tubama -2 i B-2. Shake, promatrati i zabilježiti boju. Stavite 10 kapi HCl u cijevi -3 i B-3. Shake, promatrati i zabilježiti boju. Na istoj cijevi -3 umetanje 10 kapi NaOH. Shake, promatrati i snimati. Opet tube -3 staviti 10gotas HCl. Shake, promatrati i snimati (možete nastaviti na neodređeno vrijeme stavljanja HCl i NaOH). Izgraditi tablicu pokazati rezultate. Napomena: da bi ovaj eksperiment još zanimljivije, možete ga ostvariti uz pomoć projektor i Petri jela zamjene cijevi.