Mass Flow Rate Formula:
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Definition: Mass Flow Rate for Ilkovic Equation is defined as the mass of liquid mercury passing per unit time in polarographic measurements.
Purpose: It's a crucial parameter in polarography that affects the diffusion current measured at the dropping mercury electrode.
The calculator uses the Ilkovic equation:
Where:
Explanation: The equation relates the mass flow rate of mercury to the measured diffusion current and other experimental parameters.
Details: Accurate determination of mass flow rate is essential for correct interpretation of polarographic data and for quantitative analysis.
Tips: Enter the diffusion current in amperes, number of electrons (integer), diffusion coefficient in m²/s, drop time in seconds, and concentration in mol/m³. All values must be > 0.
Q1: What is the typical value range for mass flow rate?
A: Typically ranges from 10-15 to 10-12 kg/s for standard polarographic measurements.
Q2: Why is the diffusion coefficient important?
A: It determines how quickly the analyte moves to the electrode surface, affecting the current.
Q3: How accurate is this calculation?
A: It provides good estimates when experimental conditions match the assumptions of the Ilkovic equation.
Q4: What affects the drop time of mercury?
A: Capillary dimensions, mercury pressure, and solution properties all influence drop time.
Q5: Can I use this for non-mercury electrodes?
A: No, this equation is specific to dropping mercury electrode systems.