Question

8:Which is an
electrochemical cell?​

Answer 1

ANSWER-

An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions. ... A common example of a galvanic cell is a standard 1.5 volt cell meant for consumer use...

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Answer 2

Answer:

An electrochemical cell is a system that can either produce electrical energy from chemical reactions taking place inside it or use electrical energy supplied to it to promote chemical reactions taking place inside it. Chemical energy may be converted to electrical energy or vice versa using these devices. A typical 1.5-volt battery, which is used to power many electrical appliances such as TV remotes and clocks, is an example of an electrochemical cell.

HALF CELLS AND CELL POTENTIAL

• Electrochemical cells are made up of two halves, each of which contains an electrode dipped in an electrolyte. Both halves of the cell will use the same electrolyte.
• These half cells are bound by a salt bridge, which provides a medium for ionic interaction between them while preventing them from mixing. A filter paper dipped in a potassium nitrate or sodium chloride solution is an example of a salt bridge.
• One of the electrochemical cell’s half cells loses electrons due to oxidation, while the other retains electrons by reduction. It should be remembered that in all half cells, an equilibrium reaction occurs, and once the equilibrium is reached, the net voltage becomes 0 and the cell ceases to produce electricity.
• The electrode potential describes the tendency of an electrode in contact with an electrolyte to lose or gain electrons. These potentials’ values can be used to estimate the cell’s overall potential. The electrode potentials are usually calculated using a regular hydrogen electrode as a reference electrode (an electrode of known potential).