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Platinum electrodes
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∙ 11y ago
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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 are electrodes made of?
It varies. Electrodes can be made of iron, carbon, platinum or any number of electrical conductors.
What is the chemical symbol for platinum?
The chemical symbol for gold is Au, silver is Ag, and platinum is Pt.
What elements are attracted to negative or positive electrodes?
all of them
Do electrodes provide moisture and aid in conduction?
false
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 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 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)
What are depth electrodes?
They are electrodes surgically-implanted into the brain
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.
How many electrodes does an Electroencephalography need?
Approximately 16-20 electrodes
How many electrodes does an EEG need?
Approximately 16-20 electrodes
What are the uses of calomel electrodes?
The calomel electrodes are usually used as the salt bridge.
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.
What is a battery end called?
Electrodes... Positive (anode) and Negative (cathode) electrodes which are attached to the terminals. The electrodes provide the chemical energy which is converted to a flow of electrons. And the electrolyte, the electrolyte separates the electrodes but allows for the passages of electrons and ions for the electro-chemical reaction of the electrodes.
What is the primary use of carbon and graphite electrodes?
electrodes are used in all types of electric furnaces.
What is the role of electrons in a voltaic cell?
a volcanic cell has electrodes and electrons flow through electrodes .
