copper-zinc
The anode and the cathode are the metal components that are in contact with the electrolyte in a battery.
Anode is positive and cathode is negative. Cathode is the longest led frame. Anode is where the oxidation reaction takes place while cathode is where the reduction reaction takes place or in a galvanic corrosion the anode is the metal that corrodes while the cathode is protected.
Lead is the metal present at both the cathode and anode in a car battery, as it is used in both the positive and negative plates of lead-acid batteries.
The difference between electrolytic refining and electrolytic reduction is as follows: a. In electrolytic reduction graphite electrodes are used which are of same size. in electrolytic refining the anode is made of the impure metal which is to be purified and the cathode is made from that pure metal. initially the cathode is thick and the anode is very thin. b. the electrolyte used in electrolytic refining is the metal sulphate with acid (acid id added to increase the conductivity) which is aqueous in nature. whereas in electrolytic reduction molten chloride form of the solution is used. c. The impure metal at the anode displaces the metal from the aqueous solution and the these ions go to the cathode and attach to the cathode as they are now pure. basically the impure metal at the anode directly doesn't go to the cathode, its a indirect process. as the reaction goes on, the size of the anode reduces and finally disappears and the cathode becomes thick as all the impure metal is converted into pure metal. this happens in electrolytic refining. whereas in electrolytic reduction the metal from the molten solution deposits on the cathode and chlorine gas is evolved at the anode. general differences: a. in electrolytic reduction no anode mud is formed and in electrolytic refining anode mud is formed from the impurities oh the impure metal. b. electrolytic reduction is done to extract metals of high reactivity from their ores. electrlolytic refining is done to purify (refine) metals from their impure form.
If the same metal is used as both the anode and cathode in an electrochemical cell, no redox reaction will occur and no electrons will flow between the electrodes. This would result in no electricity being generated or no chemical reaction taking place within the cell.
The anode in electrolysis is the positive electrode where oxidation occurs. This means that electrons are released from the anode, causing ions to be attracted towards the cathode for reduction.
A carbon rod can serve as either a cathode or an anode depending on the setup of the electrochemical cell. In general, carbon rods are often used as anodes in various electrolytic processes due to their stability and resistance to corrosion.
TRUE!
The graphite rod acts as the cathode in the electrolysis process for producing aluminum through electrometallurgy. When a current is passed through the molten aluminum oxide, aluminum is reduced at the cathode (graphite rod) while oxygen is released at the anode. This allows for the extraction of pure aluminum metal from its ore.
the invention was a tri-ode diode which is an electronic gas filled tube with an anode and a cathode and one more switching element. The anode is actually the negative plate and the cathode is the positive side. The third element is a switch for on and off.
In an electric cell, the electrode can be either a metal or graphite rod. The electrode is the conductor through which electric current enters or leaves the cell during the chemical reaction. Both metal and graphite electrodes are commonly used in various types of electric cells.
Goldstein used a gas discharge tube which had a perforated cathode. When a high electrical potential of several thousand volts is applied between the cathode and anode, faint luminous "rays" are seen extending from the holes in the back of the cathode. These rays are beams of particles moving in a direction opposite to the "cathode rays," which are streams of electronswhich move toward the anode. Goldstein called these positive rays Kanalstrahlen, "channel rays" or "canal rays", because they were produced by the holes or channels in the cathode