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An electrode at which aluminium is deposited during electrolysis of alumina?
Cathode is the electrode at which aluminium is deposited during electrolysis of alumina. Aluminum ions (Al3+) are reduced to form solid aluminum metal at the cathode.
What is a reference electrode?
A reference electrode is a stable electrochemical electrode with a known and constant electrode potential. It is used as a comparison point in electrochemical measurements to determine the potential of another electrode in a cell. Reference electrodes help provide accurate and reliable measurements in various electrochemical processes.
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).
How does a pH electrode work to measure the acidity or alkalinity of a solution?
A pH electrode works by measuring the electrical potential difference between a reference electrode and a glass electrode. The glass electrode is sensitive to hydrogen ions in the solution, which determines the acidity or alkalinity. The pH value is calculated based on this potential difference.
What type of electrodes are used in potentiometric titration?
Potentiometric titration is a method to detect potential difference between the indicator electrode and reference electrode and thus determine concentration of chemical component, which reacts with reagent added to a solution potentially in equilibrium at the beginning.The popularly used reference electrode is either silver-silver chloride or mercury sulfate electrode, and the indicator electrode is generally made of glass electrode, platinum electrode and silver electrode or ion selective electrode.
What is electrode potential-?
Electrode potential is the voltage that an electrode is at. This has to be measured versus a reference electrode
Advantages of the Standard electrode potential?
Standard electrode potential is a redox electrode. This is the forms the basis of the thermodynamic scale.
What is the explanation for the origin of single electrode potential?
The single electrode potential comes from electrodes.
What is electrode potential of calomel electrode?
246 mV
State the relation between reduction electrode potential of metal electrode and its tendency towards corrosion?
When the reduction electrode potential of the metal electrode increases there will be a tendency towards corrosion.
An electrode at which aluminium is deposited during electrolysis of alumina?
Cathode is the electrode at which aluminium is deposited during electrolysis of alumina. Aluminum ions (Al3+) are reduced to form solid aluminum metal at the cathode.
What is a reference electrode?
A reference electrode is a stable electrochemical electrode with a known and constant electrode potential. It is used as a comparison point in electrochemical measurements to determine the potential of another electrode in a cell. Reference electrodes help provide accurate and reliable measurements in various electrochemical processes.
Which is the electrode is the anode in a galvanic cell?
The electrode with the highest oxidation potential
How is the potential of the calomel electrode kept constant in potentimetre?
In a potentiometer, the potential of the calomel electrode is kept constant by maintaining a saturated solution of potassium chloride in contact with the calomel electrode. This ensures that the electrode potential remains stable, as the concentration of chloride ions remains unchanged. Additionally, the use of a reference electrode, like the calomel electrode, provides a reliable and reproducible potential for accurate measurements in electrochemical experiments. Proper maintenance of temperature and avoiding contamination further help in keeping the potential stable.
Why alkali metals have more negative electrode potential?
Alkali metals have more negative electrode potential because they have a strong tendency to lose electrons, making it easier for them to be oxidized at the electrode surface. This electron-donating tendency results in a more negative electrode potential compared to other elements.
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).
