1. What is Molarity of Solution given Molar Conductivity?

Definition: This calculator determines the molarity of a solution based on its specific conductance and molar conductivity.

Purpose: It helps chemists and researchers calculate solution concentration from conductivity measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( M \) — Molarity of solution (mol/L)
• \( K \) — Specific conductance (S/m)
• \( \Lambda_m \) — Molar conductivity (S·m²/mol)

Explanation: The specific conductance is multiplied by 1000 to convert units, then divided by the molar conductivity to obtain molarity.

3. Importance of Molarity Calculation

Details: Accurate molarity determination is crucial for preparing solutions, conducting experiments, and analyzing chemical reactions.

4. Using the Calculator

Tips: Enter the specific conductance in S/m and molar conductivity in S·m²/mol. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is specific conductance?
A: Specific conductance is a measure of a solution's ability to conduct electricity, dependent on ion concentration and mobility.

Q2: How is molar conductivity different?
A: Molar conductivity is the conducting power of all ions produced by one mole of electrolyte in solution.

Q3: Why multiply by 1000 in the formula?
A: The factor 1000 converts cubic meters to liters in the units (1 m³ = 1000 L).

Q4: Can I use this for any electrolyte solution?
A: Yes, but the molar conductivity value must be appropriate for your specific electrolyte and temperature.

Q5: What are typical values for molar conductivity?
A: For strong electrolytes at 25°C: ~150 S·cm²/mol for NaCl, ~425 S·cm²/mol for HCl (note unit conversion may be needed).