Vicky Silviana的实验室

Well, since chemistry is nothing than electron transferring, electrolysis can act as both the strongest oxidant and reductant, but if controlled it can help us obtain high-quality crystals or something nearly impossible from normal chemical reactions. Since almost all of these were performed long long ago, we can only try our best to recall. Of course, having positive oxidation state, metals can only be deposited on the cathode. Na Being one of the most reactive metals, it reacts very violently with water and many weaker acids like NH3, so obtaining from aqueous solution is surely impossible. It's very soft so the shape does not matter. NaOH(l) - stainless steel anode The industrial way, but our equipment was very very terrible. However, when we do so the produced Na violently exploded. Too dangerous! NaCl - FeCl3 - Pt anode - propylene carbonate(PC) solvent FeCl3 reacts with NaCl to form soluble Na[FeCl4], while PC is a good polar aprotic solvent. Solution was nearly opaque and mu...

Some metals have low melting point and melting them at home is possible. When this is frozen, crystals should form. Pb MP: 600.61 K ​(327.46 °C, ​621.43 °F) Pb is very similar to Bi in most properties so we used the same procedure as the one for Bi. Difference: higher melting point, higher toxicity, no radioactivity, higher chemical reactivity, higher density, solid density larger than liquid, lower hardness and strength, different crystal structure. We must remove asbestos to allow melting. We made some feather-like crystals on a hemisphere, but in almost all cases it freezes into hemisphere, not well-formed crystals. Maybe it freezes much faster than Bi due to the higher melting point. Also it quickly loses its silvery appearance and becomes dull upon exposure to air. Bi MP:  544.7 K ​(271.5 °C, ​520.7 °F) Bi can be molten easily with alcohol lamp in a stainless steel container. An asbestos mesh is put under it to reduce heating speed and make temperature uniform. When heate...