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Chemistry What changes did you observe? Are the same as in the first experiment? What is the difference between this experiment and others that you held? In this experiment, the copper metal was in contact with the so- dissolution of the metal itself (CuSO ) and zinc metal in contact with a solution of sodium chloride (NaCl ) so that the metals were separated into two containers (+ beef tripe plastic container). Have you noticed that the two containers containing substances and metals joined by a wire, were connected to a lamp was lit, indicating the passage of electrical current. You have built a pile! And where did the electrical current that lit the lamp? In another container you used metals in solid immersed in the solution of another metal. What happened to the zinc plate? And with the copper plate? What does this mean? In the experiment you just performed, the zinc plate (rail / nail) loses electrons of the last layer spontaneously; say that zinc metal is oxidized (the region of the anode, the negative pole). While the copper plate (wire) receives the electrons that came over the wire that connects the plates of metal; say that the copper metal is reduced (the cathode region, the positive pole). What you witnessed? A transfer of electrons in a chemical reaction. These chemical reactions are called reactions redox, are spontaneous and can produce electricity if the two semi-re- actions (the reduction reaction and oxidation), occur in separate containers. Each container in which the chemical reactions occur is called the half-cell or semicélula. The reaction that occurs in each container is called a half reaction or half-reaction. Each half cell (semicélula) is formed by a metal immersed in an aqueous solution of the same metal, such as copper plate (wire) immersed in aqueous copper sulfate (CuSO ), this ensemble ( Metal + solution) call electrode.
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Kemija Koje promjene ste promatrati? Su isti kao u prvom eksperimentu? Koja je razlika između ovog eksperimenta i drugima da se drže? U ovom eksperimentu, bakra metal je u kontaktu s pa- Raspuštanje metala sama (CuSO ) i cinka metala u kontaktu s otopinom natrijevog klorida (NaCl ), tako da su metali su podijeljeni u dvije posude (+ junetina tripice plastični kontejner). Jeste li primijetili da su dvije posude u kojima su tvari i metala međusobno povezane žicom, bili su povezani s lampom je bila osvijetljena, što ukazuje na prolaz električne struje. Vi ste izgradili gomila! A gdje je električna struja koja upalio svjetiljku? U drugu posudu koju ste koristili metale u krutom uronjeni u otopinu drugih metala. Što se dogodilo s cink tanjuru? I uz bakrenu pločicu? Što to znači? U eksperimentu ste upravo provodi, cinka ploče (željeznički / čavao) gubi elektrone iz zadnjeg sloja spontano, kažu da cink metal oksidira (područje anode, negativan pol). Dok bakrena pločica (žice) prima elektrone koji su došli preko žice koja povezuje tanjure od metala, kažu da je bakar metal je smanjena (katode regija, pozitivni pol). Što si vidjela? Transfer elektrona u kemijskoj reakciji. Te kemijske reakcije nazivaju se reakcije redoks, su spontani i mogu proizvoditi struju ako su dvije polu-re- akcije (smanjenje reakcije i oksidacija), javljaju u odvojenim posudama. Svaki kontejner u kojem se kemijska reakcija se javlja se zove polučlanak ili semicélula. Reakcija koja se javlja u svakom spremniku se zove pola reakciju ili polu-reakcije. Svaka polovica stanica (semicélula) tvori metal uronjen u vodenu otopinu istog metala, kao što su bakar ploče (žica) uronjen u vodenoj bakar sulfat (CuSO ), ova cjelina ( Metal + rješenje) poziva elektrode.