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Oxidation occurs at the anode of an electrolytic cell.
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What is true of both galvanic and electrolytic cells?
*electrolytic cells Oxidation occurs at the cathode
What is the electrode where oxidation takes place?
A: at the anode in both an electrolytic cell and a voltaic cell
Why anode effect comes in AL smelter?
when the amount of alumina in the hall heroult electrolytic cell decreases to a certain level then the voltage of the cell abruptly increases which leads to the failure of the cell.this effect is known as anode effect.
What happens to the anode in an electrochemical cell?
it loses mass
What is the difference between electrolytic reduction and electrolytic refining under these heads a. electrodes b. electrolytes c. reaction at positive and negative electrodes?
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.
What happens at the anode in an electrolytic cell?
oxidation
In the electrolytic cell electron flows from?
Electron flow is from anode (+) to cathode (-)
What is true of both and electrolytic cells?
reduction happens at the cathode Oxidation happens at the anode
What is true of both galvanic and electrolytic?
reduction happens at the cathode Oxidation happens at the anode
What is true of both galvanic and electrolytic cells?
*electrolytic cells Oxidation occurs at the cathode
What happens in the cathode in an electrolytic cell?
Reduction occurs at the cathode in an electrolytic cell.
What is the electrode where oxidation takes place?
A: at the anode in both an electrolytic cell and a voltaic cell
Name of one electrode and say is positive or negative?
The Cathode is the negative electrode; the anode is the positive electrode
What is the true of both galvanic and electrolytic cells?
They are nonspontaneous
Why anode effect comes in AL smelter?
when the amount of alumina in the hall heroult electrolytic cell decreases to a certain level then the voltage of the cell abruptly increases which leads to the failure of the cell.this effect is known as anode effect.
What is a sacrificial anode?
A sacrificial anode is a piece of corrodible metal which is preferentially consumed by electrolytic action.
What happens to the anode in an electrochemical cell?
it loses mass
