1. What is Degree of Dissociation?

Definition: The Degree of Dissociation is the extent of generating current carrying free ions, which are dissociated from the fraction of solute at a given concentration.

Purpose: It quantifies how much a weak acid dissociates in solution, which is important for understanding acid strength and solution properties.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \alpha \) — Degree of Dissociation
• \( K_a \) — Dissociation Constant of Weak Acid
• \( V_m \) — Molar Volume (m³/mol)

Explanation: The degree of dissociation is calculated as the square root of the product of the acid dissociation constant and the molar volume.

3. Importance of Degree of Dissociation

Details: Knowing the degree of dissociation helps predict solution conductivity, pH, and chemical reactivity in various applications.

4. Using the Calculator

Tips: Enter the dissociation constant (Ka) of the weak acid and the molar volume (Vm). Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the range for degree of dissociation?
A: For weak acids, α typically ranges from 0 (no dissociation) to 1 (complete dissociation), but is usually much less than 1.

Q2: How does temperature affect the degree of dissociation?
A: Generally, dissociation increases with temperature as the equilibrium shifts toward the dissociated state.

Q3: What are typical Ka values for weak acids?
A: Weak acids typically have Ka values between 10⁻² and 10⁻¹⁰. Strong acids have much higher Ka values.

Q4: What units should be used for molar volume?
A: The calculator expects molar volume in cubic meters per mole (m³/mol).

Q5: Can this calculator be used for bases?
A: No, this specific formula applies only to weak acids. Bases have different dissociation relationships.