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Is the electrode the metal or graphite rod in an electric cell?
Wiki User
∙ 13y ago
Tt depends on the metal which is the cathode and which is the anode. However, in most cases, graphite is the cathode and the metal is the anode. the strictly correct answer is that BOTH the metal and the graphite rod are electrodes. You must have two electrodes minimum to create a cell.
Wiki User
∙ 13y ago
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Why is graphite used as an electroed in dry cells?
Dry cell graphite electrode when treated with permanganate can be used as a hydrogen ion sensor. where activated dry cell graphite electrode seem to be suitable as potentiometric indicator electrodes. :)
Which metal was only discovered after the invention of the electric cell?
Aluminium
A salt bridge is needed in an electrochemical cell to buffer provide ions behave as an electrode or complete the electric circuit?
A salt bridge will allow for the completion of a circuit in an electrochemical cell.
Which electrode in the anode is galvanic cell?
Zinc is the anode.
What are electrodes made out of?
The positive electrode is a graphite rod (elemental carbon).
Is the rod in an electric cell metal or graphite?
Graphite
Why is graphite used as an electroed in dry cells?
Dry cell graphite electrode when treated with permanganate can be used as a hydrogen ion sensor. where activated dry cell graphite electrode seem to be suitable as potentiometric indicator electrodes. :)
What kind of material is used to make the positive electrode of a dry cell?
The positive electrode is a graphite rod (elemental carbon).
In a wet cell electrons move from the negative electrode to the positive electrode?
A wet cell refers to a primary electric cell wherein the electrolyte is a liquid. It is true that in a wet cell, electrons move from the negative electrode to the positive electrode.
Why the dry cell work when kept in sunlight?
A dry cell works when kept in sunlight because it is comprised of a metal called electrode or graphite rod. The sunlight helps the cell to maintained 1.5 volts and stored a charge of one coulomb.
What is the redox reaction takes place in a dry-cell battery?
The MnO2 would like to take electrons from the Zn much the same way that a bully would like to take someones lunch money. The problem for MnO2 is that it is not touching the Zn. The MnO2 is touching the graphite electrode and is trying to pull off the graphite electrons. Graphite is tougher than Zn and will not give up electrons but there is a tug. The graphite makes the positive electrode of the cell. On the Zn side, the Zn is the electrode and the electrons are not held very well by Zn. So the Zn electrode has pressure of electrons wanting to leave and the graphite electrode has suction that wants more electrons. The pressure difference can be measured as 1.5 volts. Volts are used to measure electrical pressure. When a light bulb or something is connected then electrons from the Zn electrode have a path to go to the graphite electrode. The graphite is willing to give electrons to MnO2 because it can get them back from the Zn through the circuit. Also when the Zn electrode loses 2 electrons a Zn atom turns into an ion and dissolves in the electrolyte. Because of its positive charge it is attracted to the correspondingly formed negative charge at the graphite when MnO2 took an electron.
What is the difference between a wet cell and a dry cell?
* A "dry-cell" battery is essentially comprised of a metal electrode or graphite rod (elemental carbon) surrounded by a moist electrolyte paste enclosed in a metal cylinder as shown below. * In the most common type of dry cell battery, the cathode is composed of a form of elemental carbon called graphite, which serves as a solid support for the reduction half-reaction. * At the center of each dry cell battery is a rod called a cathode, which is generally made of metal or graphite and is surrounded by an electrolyte paste. The cathode and electrolyte paste are wrapped in paper or cardboard.
Which metal was discovered after the invention of the electric cell?
Aluminium
What is the purpose of the reference electrode?
A reference electrode is an electrode with a well-known electrode potential. Its main function is to serve as a half cell to build an electrochemical cell.
Difference between reference electrode and indicator electrode?
Often electrochemical studies are interested in one of the electrodes of the cell only. The second electrode is present to complete the cell. Electrode of interest is named working electrode or the indicator electrode; the second electrode is know as reference electrode or auxiliary electrode (counter electrode).
Which metal was only discovered after the invention of the electric cell?
Aluminium
What is electrode potential-?
Electrode potential is the voltage that an electrode is at. This has to be measured versus a reference electrode
