1. What is Molar Volume of Solution?

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.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_m \) — Molar volume (cubic meters per mole)
• \( Λ_m(solution) \) — Molar conductivity of the solution (S·m²/mol)
• \( K \) — Specific conductance of the solution (S/m)

Explanation: The molar conductivity is divided by the specific conductance to obtain the molar volume of the solution.

3. Importance of Molar Volume Calculation

Details: Calculating molar volume is essential in electrochemistry for understanding solution behavior, conductivity studies, and determining solution concentrations.

4. Using the Calculator

Tips: Enter the molar conductivity in S·m²/mol and specific conductance in S/m. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are typical values for molar conductivity?
A: For strong electrolytes, Λ_m 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.