Molar Volume Formula:
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Definition: Molar volume is the volume occupied by one mole of a substance (in this case, a solution) at a given temperature and pressure.
Purpose: This calculator helps determine the molar volume of an electrolytic solution based on its conductivity properties.
The calculator uses the formula:
Where:
Explanation: The molar conductivity is divided by the specific conductance to obtain the molar volume of the solution.
Details: Calculating molar volume is essential in electrochemistry for understanding solution behavior, conductivity studies, and determining solution concentrations.
Tips: Enter the molar conductivity in S·m²/mol and specific conductance in S/m. Both values must be positive numbers.
Q1: What are typical values for molar conductivity?
A: For strong electrolytes, Λm typically ranges from 0.01 to 0.15 S·m²/mol at 25°C.
Q2: How does temperature affect the calculation?
A: Conductivity increases with temperature, so measurements should be taken at consistent temperatures.
Q3: What units should I use for accurate results?
A: Ensure molar conductivity is in S·m²/mol and specific conductance is in S/m for proper unit cancellation.
Q4: Can this be used for non-electrolyte solutions?
A: No, this calculation is specifically for electrolyte solutions that conduct electricity.
Q5: How does concentration affect molar volume?
A: Molar volume typically decreases with increasing concentration due to ion interactions.