PDF Publication Title:
Text from PDF Page: 001
The Chemistry of Copper Electrolysis HANDS-ON ACTIVITY OBJECTIVES Apply basic chemistry principles to understand the process of electrolysis Understand how electrolysis is used in the processing of copper ores TIME REQUIRED Thirty minutes to set up and up to 60 minutes to run the electrolysis. HANDS-ON ACTIVITY OVERVIEW This experiment demonstrates the process of electrolysis, which is used in the commercial purification of ores such as copper sulfide ore. Electrolysis uses an electrical current to move ions in an electrolyte solution between two electrodes. In copper electrolysis, when a current is applied, positively-charged copper ions (called cations) leave the anode (positive electrode) and move toward the cathode (negative electrode). In this experiment (Figure 1), a U.S. penny acts as the copper source/anode and a U.S. dime serves as the cathode (a dime, versus another penny, makes the movement of copper more obvious). A dilute aqueous solution of copper sulfate and sulfuric acid is used as the electrolyte. An electric current is provided by a 9 volt (V) battery. When electric current is supplied to the anode (penny) via the positive terminal of the battery, copper atoms are oxidized to form cations with a positive charge (Cu2+). The cations are set free in the electrolyte solution and are attracted to the cathode (dime), which is connected to the negative terminal of the battery. Additionally, the copper sulfate electrolyte solution contains copper in the form of positively-charged cations, which are also attracted to the negative electrode (the cathode, a dime). PositiveAnode(penny): Cu(solid)Cu2+(aqueous)+2e- NegativeCathode(dime): Cu2+(aqueous)+2e-Cu(solid) This results in the net loss of copper from the anode (penny) and the gain of a copper coating on the cathode (dime).PDF Image | Chemistry of Copper Electrolysis
PDF Search Title:
Chemistry of Copper ElectrolysisOriginal File Name Searched:
copper_electrolysis_hands_on_final.pdfDIY PDF Search: Google It | Yahoo | Bing
Salgenx Redox Flow Battery Technology: Salt water flow battery technology with low cost and great energy density that can be used for power storage and thermal storage. Let us de-risk your production using our license. Our aqueous flow battery is less cost than Tesla Megapack and available faster. Redox flow battery. No membrane needed like with Vanadium, or Bromine. Salgenx flow battery
| CONTACT TEL: 608-238-6001 Email: greg@salgenx.com | RSS | AMP |