Find the pH of solution forming standard hydrogen electrode:Correct answer is '0'. Can you explain this answer?

Question

Answer

Standard hydrogen electrode used as reference so thats why convencially it's E^• is zero the ph is zero

Answer

pH of Solution Forming Standard Hydrogen Electrode: 0

The pH of a solution forming a standard hydrogen electrode is 0. This can be explained through the following points:

Definition of pH:

pH is a measure of the acidity or alkalinity of a solution. It is defined as the negative logarithm (base 10) of the concentration of hydrogen ions (H+) in a solution. pH values range from 0 to 14, with 0 being highly acidic, 7 being neutral, and 14 being highly alkaline (basic).

Standard Hydrogen Electrode:

A standard hydrogen electrode (SHE) is an electrode used as a reference in electrochemical measurements. It consists of a platinum electrode immersed in a solution of hydrogen ions (H+) at a concentration of 1 M. The electrode potential of the SHE is defined as 0 V.

pH of an H+ Solution:

Since the standard hydrogen electrode consists of a solution of hydrogen ions (H+), the pH of this solution can be determined. The concentration of H+ ions in the SHE is 1 M, which means that the negative logarithm of 1 is 0. Therefore, the pH of the solution forming the standard hydrogen electrode is 0.

Acidity of the Solution:

A pH of 0 indicates a highly acidic solution. This means that the concentration of H+ ions is very high, leading to a low pH value. In an acidic solution, the concentration of H+ ions exceeds the concentration of hydroxide ions (OH-).

Importance of a pH of 0:

Having a pH of 0 for the solution forming the standard hydrogen electrode is crucial as it serves as a reference point for determining the electrode potentials of other half-cells in electrochemical measurements. The SHE with a pH of 0 allows for the comparison of other electrode potentials and the calculation of cell potentials in various electrochemical reactions.

Conclusion:

The pH of the solution forming the standard hydrogen electrode is 0, indicating a highly acidic solution. This is important for referencing and measuring electrode potentials in electrochemical reactions.

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