Drop Lifetime Formula:
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Definition: This calculator determines the lifetime of a mercury drop in a dropping mercury electrode based on the diffusion current and other electrochemical parameters.
Purpose: It helps electrochemists understand and control the timing of mercury drops in polarographic measurements.
The calculator uses the Ilkovic equation:
Where:
Explanation: The equation relates the drop lifetime to various electrochemical parameters in polarography.
Details: Accurate drop lifetime calculation is crucial for reproducible measurements in polarographic analysis and voltammetry experiments.
Tips: Enter all parameters with appropriate units. Typical values are provided as defaults for common experimental conditions.
Q1: What is the typical range for drop lifetime?
A: Typically 2-6 seconds in most polarographic experiments.
Q2: How does mass flow rate affect drop lifetime?
A: Higher mass flow rates generally lead to shorter drop lifetimes.
Q3: Why is the exponent 6 in the equation?
A: The exponent comes from the mathematical relationship between drop formation parameters and diffusion current.
Q4: What factors can affect diffusion coefficient?
A: Temperature, solvent viscosity, and molecular size all influence diffusion coefficient.
Q5: How accurate is this calculation?
A: It provides a good estimate but actual drop lifetime may vary slightly due to experimental conditions.