Which of the following is disadvantage of hydrogen electrode?
Which of the following is disadvantage of hydrogen electrode?
4. Which of the following is not the disadvantage of hydrogen electrode? Explanation: Hydrogen electrode does not give a salt error.
What are the disadvantages of calomel electrode?
Disadvantages of Calomel Electrode: When half-cell potentials are to be measured, compensation for potential is necessary. The calomel electrode cannot be used in the measurement of potentials of the cell where K+ and Cl – ions interfere in the electrochemical reactions of the cell.
What are the difficulties in setting standard hydrogen electrode?
Limitations of standard hydrogen electrode are : 1) It is very difficult to assemble the apparatus. 2) It is difficult to maintain the pressure of H2 gas of 1 atm throughout and also the concentration of H+ ion of 1 M. 3) H2 electrode cannot be used in presence of oxidising agent.
What is the limitation of hydrogen electrode explain calomel electrode?
Disadvantages of Calomel Electrode: The calomel electrode cannot be used in the measurement of potentials of the cell where K+ and Cl – ions interfere in the electrochemical reactions of the cell. The oxidation potential of the electrode depends on the concentration of KCl.
Why HCL is used in standard hydrogen electrode?
There is an electrode potential limit to the use of hydrochloric acid. The half–cell potential for Cl2/Cl– is +1.36V, therefore if the other cell has an electrode potential of > +1.36V, you may get oxidation of the chloride ion at the hydrogen electrode.
What would the potential of a standard hydrogen she electrode?
A reference electrode helpful in calculating electrode potentials of other electrodes is named as “standard hydrogen electrode” or SHE. Its standard potential is always 0.0 V. When combined with other electrodes, it creates cell potential which is identical to the standard electrode potential of another electrode.
What is the advantages and disadvantages of calomel electrode?
The SCE has the advantage that the concentration of Cl-, and, therefore, the potential of the electrode, remains constant even if the KCl solution partially evaporates. A significant disadvantage of the SCE is that the solubility of KCl is sensitive to changes in temperature.
Why is calomel electrode preferred over hydrogen?
Answer: Yes, the calomel electrode is a breakthrough in electrochemical industry due to its ease of its oxidation and reduction reactions.