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What are the Types of ion selective electrodes?
There are several types of ion-selective electrodes including glass membrane electrodes, liquid ion-exchange electrodes, solid-state ion-selective electrodes, and gas-sensing electrodes. Each type is designed to selectively detect and measure specific ions in a solution based on their electrochemical properties.
What happens during electrolysis of znso4?
It depends on the electrodes being used :1) If Pt(inert) electrodes are used, then the products will be:Cathode: Zn2+ + 2e- ------> ZnAnode: 2H20 ---------> 4H+ + O2 + 4e-(or) 4OH- ----------> O2 + 4H2O + 4e-(they are one and the same rxn )SO42- is a spectator ion here.Net rxn: 2Zn2+ + 2H2O ----------------> 2Zn + O2 + 4H+(or) 2ZnSO4 + 2H2O -----------------> 2Zn + O2 + 2H2SO4(use Pt electrode)Also if not mentioned, always inert electrodes i.e. Pt electrodes are taken.2) If very pure Zn electrodes are used, that too in an O2 free atmosphere, then the products will remain the same.3) If some Cu impurity is present in the Zn electrode, then at cathode H2O (or H+) is reduced instead of Zn .i.e. 2H+ + 2e- -----------> H2or) 2H2O + 2e- ---------> H2 + 2OH-Anode rxn remains the same.4) If s pure Zn electrodeare used in an O2 atmosphere, then again H2O (or H+) is reduced instead of Zn. (the rxns are similar to case 3)
What is the chemical symbol for platinum?
The chemical symbol for gold is Au, silver is Ag, and platinum is Pt.
Why must two electrodes be used to make an electrical measurement such as pH?
Two electrodes are required to make an electrical measurement, such as pH, because a potential difference is created between the electrodes when they are in contact with the solution being measured. The potential difference is then used to calculate the pH of the solution based on the known properties of the electrodes and the solution.
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 types of electrodes are used?
1. M.M.O.(MIXED METAL OXIDE) 2. MAGNESIUM ANODE3. ALUMINIUM ANODE4. ZINC ANODE5. PURE IRON ANODE6. PENCIL ANODE7. H.S.C.I. ANODE(high silicon cast iron)8. Pb-Ag ANODE9. PLATINUM ANODE (Pt-Ti & Pt-Nb)
Why in conductivity cell pt electrode is used instead of cu electrode?
Platinum electrodes are used in conductivity cells because they are inert, stable, and have a wide potential window, making them suitable for a wide range of electrolytes. Copper electrodes can be reactive in some electrolytes, leading to interference or contamination of the sample being measured.
What are depth electrodes?
They are electrodes surgically-implanted into the brain
What is a group often used for electrodes or catalysts because they do not combine easily with other elements called?
The platinum group is often used for electrodes or catalyts because they do not combine easily with other elements.
What the electrodes in the cochlear implant replace?
Electrodes placed inside the cochlear receive the decoded signals. The 22 electrodes allow a range of different pitches to be detected. The electrodes stimulate the hearing receptors.
Type of electrodes used to electrically stimulate the brain?
Common types of electrodes used for electrical brain stimulation include intracranial electrodes (such as depth electrodes or grids), subdural electrodes, and transcranial electrodes. These electrodes are used in techniques like deep brain stimulation (DBS), electrocorticography (ECoG), and transcranial direct current stimulation (tDCS) to modify neural activity for therapeutic or research purposes.
How many electrodes does an EEG need?
Approximately 16-20 electrodes
How many electrodes does an Electroencephalography need?
Approximately 16-20 electrodes
What are the uses of calomel electrodes?
The calomel electrodes are usually used as the salt bridge.
What are the Types of ion selective electrodes?
There are several types of ion-selective electrodes including glass membrane electrodes, liquid ion-exchange electrodes, solid-state ion-selective electrodes, and gas-sensing electrodes. Each type is designed to selectively detect and measure specific ions in a solution based on their electrochemical properties.
Why do electrolysis of brine need inert electrodes?
Electrolysis of brine requires inert electrodes, such as platinum or graphite, to prevent the electrodes from reacting with the products of the electrolysis. Using inert electrodes ensures that the reactions at the electrodes are solely due to the electrolysis of the brine solution and do not introduce impurities or alter the chemical composition of the products.
Why is not used in three electrodes in batteries?
it will be useless to use 3 electrodes. IT IS WASTE OF MONEY.Two , three or four electrodes can be used but it only increases the rate of reaction.
