Question

what is electrod potential and what is the function of electrod potential ​

Answer 1

Answer:

Explanation:

When a metal is placed in a solution of its ions, the metal acquires either a positive or negative charge with respect to the solution. On account of this, a definite potential difference is developed between the metal and the solution. This potential difference is called electrode potential.

Electrode PotentialFor example, when a plate of zinc is placed in a solution having Zn2+ ions, it becomes negatively charged with respect to solution and thus a potential difference is set up between zinc plate and the solution. This potential difference is termed the electrode potential of zinc.

Similarly, when copper is placed in a solution having Cu2+ ions, it becomes positively charged with respect to solution. A potential difference is set up between the copper plate and the solution. The potential difference thus developed is termed as electrode potential of copper. The potential difference is estab­lished due to the formation of electrical double layer at the

Following two changes occur when a metal rod is dipped in its salt solution,

(a) Oxidation: Metal ions pass from the electrode into solution leaving an excess of electrons and thus a negative charge on the electrode.

Oxidation

The conversion of metal atoms into metal ions by the attractive force of polar water molecules.

M → Mn + ne-

The metal ions go into the solution and the electrons remain on the metal making it negatively charged. The tendency of the metal to change into ions is known as electrolytic solution pressure.

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Answer 2

In electrochemistry, electrode potential is the electromotive force of a galvanic cell built from a standard reference electrode and another electrode to be characterized. By convention, the reference electrode is the standard hydrogen electrode (SHE). It is defined to have a potential of zero volts.

• It is used to measure relative strengths of various oxidants and reductants.
• It is used to calculate standard cell potential.
• It is used to predict possible reactions.