Cell Potential Formula:
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Definition: Cell Potential in Potentiometry is the amount of work energy needed to move a unit of electric charge from a reference point to a specific point in an electric field.
Purpose: It helps measure the potential difference between two electrodes in an electrochemical cell.
The calculator uses the formula:
Where:
Explanation: The cell potential is calculated by subtracting the reference EMF from the indicator EMF and then adding the junction EMF.
Details: Accurate cell potential measurements are crucial for electrochemical analysis, battery design, and corrosion studies.
Tips: Enter the indicator EMF, reference EMF, and junction EMF in volts. The calculator will compute the cell potential.
Q1: What is the difference between indicator and reference EMF?
A: Indicator EMF measures the potential of the analyte solution, while reference EMF provides a stable, known potential for comparison.
Q2: When is junction EMF significant?
A: Junction EMF becomes important when there's a liquid junction between two different electrolyte solutions.
Q3: Can cell potential be negative?
A: Yes, a negative cell potential indicates the reaction is non-spontaneous under standard conditions.
Q4: What units are used in this calculation?
A: All values should be in volts (V) for consistent results.
Q5: How precise should my measurements be?
A: For accurate results, measurements should be precise to at least 0.01V.