1. What is Specific Conductance?

Definition: Specific Conductance is the ability of a substance to conduct electricity. It is the reciprocal of specific resistance.

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( K \) — Specific Conductance (Siemens per meter)
• \( Λ_m(solution) \) — Solution Molar Conductivity (S·m²/mol)
• \( M \) — Molarity (mol/m³)

Explanation: The molar conductivity is multiplied by molarity and divided by 1000 to convert units appropriately.

3. Importance of Specific Conductance

Details: Specific conductance measurements are crucial in water quality analysis, chemical processing, and electrochemistry applications.

4. Using the Calculator

Tips: Enter the solution molar conductivity in S·m²/mol and molarity in mol/m³. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are typical values for molar conductivity?
A: For common electrolytes, values range from 0.01 to 0.15 S·m²/mol depending on the ions present.

Q2: Why divide by 1000 in the formula?
A: This converts molarity from mol/m³ to mol/L (since 1 m³ = 1000 L) for consistent units.

Q3: How does temperature affect the results?
A: Conductivity increases with temperature (typically 2% per °C). Measurements are often standardized to 25°C.

Q4: Can I use mol/L instead of mol/m³?
A: Yes, but remove the division by 1000 in the formula (K = Λm × M directly).

Q5: What's the difference between conductivity and conductance?
A: Conductance depends on sample geometry, while conductivity is an intrinsic property independent of geometry.