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An electrode potential is the potential difference that develops when an electrode of one element is placed in a solution containing its ions. In a galvanic cell, electricity is produced by the electrode potential of the two metal electrodes and their corresponding electrolytes.

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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 standard hydrogen electrode?

The standard hydrogen electrode (SHE) is a reference electrode used in electrochemistry to measure electrode potential. It consists of a platinum electrode in contact with a solution of hydrogen ions at unit activity and surrounded by hydrogen gas at a pressure of 1 bar. The SHE has an assigned potential of 0 V at all temperatures.

Related Questions

What is the explanation for the origin of single electrode potential?

The single electrode potential comes from electrodes.


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 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.


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


Why primary cell have 1.5 V only?

It depends on the electron configuration. Different metals have single electrode potential. They are both +ve and -ve. We use standard Hydrogen electrode whose potential is taken to be 0. Using that we can find half potential. Then right from that we get the total potential of a cell. So it is all natures work


Mixed potential theory?

is a theory used in electrochemistry that relates the potentials and currents from differing constituents to come up with a 'weighted' potential at zero net current. In other words, it is an electrode potential resulting from a simultaneous action of more than a single redox couple, while the net electrode current is zero.


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.


What is open circuit potential which is used to determine corrosion of materials?

The open circuit (oc) potential is the potential of the working electrode relative to the reference electrode when no potential or current is being applied to the cell.