|MadSci Network: Chemistry|
For a deveice that I am working on, we had to build a battery. We used a 250 mL beaker of 1M solution of Cu(NO3)2, a U-tube filled with 1M NaNO3 with a semi-permeable membrane on both sides, and a 250 mL beaker of 1M Al(NO3)3. We placed a copper pipe in the Cupric Nitrate solution and what I thought was an Aluminium rod in the Aluminium Nitrate solution. This cell evolved a steady 0.994 Volts. However, I accidentally set a magnet down near my supposed Al rod and much to my surprise they attracted each other. I decided to connect the Copper pipe and the other metal together and let it run overnight. 12 hours later, I returned and saw that the previously clear Aluminium Nitrate solution turned a tea like color with tiny bubbles on the surface. The copper solution was the same blueish color. I disconnected the two metals and found that the cell no longer produced a voltage. I took a piece of steel wool to the end of the unknown metal and placed it back into the brown solution. The cell began to evolve a steady 0.554 Volts. What is this metal?
Re: What metal solute turns water a tea like color?
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