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What are the names of the 2 electrodes in an electrochemical cell?
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How does the parts of a cell interact to produce a current?
In a electrochemical cell or a battery there are two electrodes and an electrolyte. Chemical reaction occurs between the electrodes and the electrolyte which causes one of the electrodes to be positively charged and the next one to be negatively charged. The differences between the two electrodes creates voltage. When the battery is now connected to a circuit it makes a current.
What happens in electrochemical cell to cause it to go flat?
An electrochemical cell comprises of 2 REDOX half cells. These are made of a metal dipped in a solution of its own ions. One of these metals will corrode away to form ions and electrons- which form the basis of the electric current by acting as the cathode. Simply put, an electrochemical cell goes flat because there's no more metal left to break down, thus it goes flat.
what are the names of the 2 main process of the cell cycle?
Interphase and mitosis.
How much voltage is required in the electrolisis of water?
About 1.23 Volts (at the electrodes). 2 H2O(l) → 2 H2(g) + O2(g); E0 = +1.229 V
What 2 organelles are in the plant cell that aren't in the animal cell?
chloroplast and cell wall
How does the parts of a cell interact to produce a current?
In a electrochemical cell or a battery there are two electrodes and an electrolyte. Chemical reaction occurs between the electrodes and the electrolyte which causes one of the electrodes to be positively charged and the next one to be negatively charged. The differences between the two electrodes creates voltage. When the battery is now connected to a circuit it makes a current.
What happens in electrochemical cell to cause it to go flat?
An electrochemical cell comprises of 2 REDOX half cells. These are made of a metal dipped in a solution of its own ions. One of these metals will corrode away to form ions and electrons- which form the basis of the electric current by acting as the cathode. Simply put, an electrochemical cell goes flat because there's no more metal left to break down, thus it goes flat.
Why don't the electrodes of a fuel cell deteriorate the way the electrodes of a battery do?
The electrodes of a storage battery, particularly the lead - lead dioxide batteries commonly used in starting vehicles, may deteriorate because the discharge reaction requires one or both of the solid electrodes used to dissolve partially in the electrolyte, and the recharging reaction requires depositing new solid on both electrodes from the electrolyte. In order to maximize the possible output of electric current from a battery during the discharge or working phase, the electrodes have special surface characteristics that maximize their effective surface area. Both the charging and discharging phases of use of a battery of this type often decrease the effective surface area of the solid electrodes, and the recharging in particular may deposit solid on one or both of the electrodes in a shape that causes it to short to the other electrode. This does not occur in fuel cells, because the solid electrodes of a fuel cell do not dissolve during use. Instead, the electrodes serve (1) as catalysts to promote the oxidation and reduction reactions of fuels supplied to the electrodes as liquids or gases dissolved in the electrolyte and (2) to accept or furnish the electrons needed for the reactions to occur at separate locations. Furthermore fuel cells never need recharging, because the reactants consumed are replenished from outside the fuel cell itself and not regenerated within the cell, as for a storage battery.
what are the names of the 2 main process of the cell cycle?
Interphase and mitosis.
Why are certain tungsten electrodes manufactured with thorium?
An alloy for electrodes containing only 1-2 % thorium has a greater melting point.
What parts of the cell are used to connect an electrochemical cell to a circuit?
The parts requried to make an electric cell is a negative electrode, a positive electrode, and an electrolyte.I hope that help :)But double check just in case xD
Where was the first battery created?
The first electrochemical cell was developed by the Italian physicist Alessandro Volta in 1792, and in 1800 he invented the first "battery" which is the correct term for a number of cells. An AA "battery" is actually a "cell". When you put 2 AA cells into something (walkman for instance) it is caled a battery.
How many electrodes are in a bulb?
2. one on the side and one on the very bottom
Distinguish between reversible and irreversible electrochemical cell?
irreversible cells are those which require replacement of chemicals.when they give out electricity. these cannot be recharged. examples are : 1 =dry cell 2=zinc acid copper cell reversible cells are those in which reversible reactions are involved.these cells can brought back to their initial state by applying external potential difference
What is over voltage in electrochemistry?
In electrochemistry, overvoltage is synonymous with overpotential. Look up overpotential instead of overvoltage to get details of what it is. Basically, it is a potential that develop because of limited reaction kinetic. It works to reduce the voltage of the electrochemical cell. Think of it like this. For a given redox reaction pair that represents a chemical cell, it has a theoretical voltage determined by thermodynamics. This is typically called the open cell voltage. It's the maximum voltage that you could harness out of this reaction if you were to make this into a battery. That is all very good and all except for the little detail of reaction kinetics. In reality, you don't ever get the maximum voltage at open cell. Once current start flowing, limitations on rate of reaction at the cathode and anode develop. Reactions are not infinitely fast. Once you start the reaction, the region near the electrodes are depleted of ion species as they are oxidized or reduced into and out of the electroloyte. It takes time for more to diffuse from the bulk to the solution to the electrode/electrolyte interface. Now your reaction rate is limited. This limitation will show up as a potential, the overpotential, at the electrode. It acts to reduce the potential available to you across the entire cell. If your open cell potential of a batttery was say 2 volts, you may find a severely rate limited reaction to generate 1.9 volts of overpotential at the electrodes as you try to draw current out of the battery. When that happens, your cell actually only gives you 0.1 volts, not 2 volts. What I described above is called concentration overpotential. There are other sources of overpotential. It is much beyond the scope of Y:A to describe it. However, the phenomenon of overpotential in an electrochemical cell is a consequence of reaction kinetics. There are other concepts like equilibrium exchange current density and the use of the Tafel plot when you delve into the topic of electrochemical cells. These are things that must be considered in addition to the thermodynamic open cell potential when a cell starts to draw a current. The best batteries will be constructed out of a system in a way as to have high exchange current density and minimum overpotential. So as you draw current from the cell, you don't find yourself with vastly diminished voltage. It's ability to do work will not be self-limiting as you put it in a device that draws current.
How do you make a potato battery?
idk u need the follwing 1)fresh potato 2)zinc and copper electrodes 3)wires 4)multimeter now put both of the electrodes in the potato and connect the wires and the multimeter around the electrodes THEN the multimeter will tell u the voltage of the potato HOPE THIS HELPED
How do you make potato batteries?
idk u need the follwing 1)fresh potato 2)zinc and copper electrodes 3)wires 4)multimeter now put both of the electrodes in the potato and connect the wires and the multimeter around the electrodes THEN the multimeter will tell u the voltage of the potato HOPE THIS HELPED
