In case of calomel electrode potential decreases
a) As concentration of KCl increases.
b) As concentration of KCl decreases.
c) As concentration of HgCl2 increase.
d) As concentration of HgCl2 decreases.
Answers
Answer:
a) As the concentration of KCL increases
Explanation:
The potential of the calomel electrode depends on the concentration of KCl used. The electrode potential decreases with increase in the concentration of chloride ions.
Answer:
The correct answer is b) As concentration of KCl decreases.
Explanation:
From the above question,
They have given :
In case of calomel electrode potential decreases
a) As concentration of KCl increases.
b) As concentration of KCl decreases.
c) As concentration of HgCl2 increase.
d) As concentration of HgCl2 decreases.
The Calomel electrode (Hg/Hg2Cl2 electrode) is a type of reference electrode commonly used in electrochemistry. The electrode consists of a mercury-mercury chloride (Hg/Hg2Cl2) mixture in a chloride solution.
The potential of the Calomel electrode is sensitive to the concentration of potassium chloride (KCl) in the solution. The potential decreases as the concentration of KCl decreases. This is because the concentration gradient of KCl between the electrode and the solution is reduced, leading to a decrease in the flow of ions between the two phases and a corresponding decrease in the potential.
In summary, the potential of the Calomel electrode decreases as the concentration of KCl decreases, due to the reduction in the concentration gradient and flow of ions between the electrode and the solution.
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