Formula:
From: | To: |
Definition: The degree of dissociation (α) is the fraction of original solute molecules that have dissociated in a solution.
Purpose: This calculator determines the degree of dissociation for a second acid based on its dissociation constant relative to a first acid with known dissociation properties.
The calculator uses the formula:
Where:
Explanation: The formula shows that the degree of dissociation is proportional to the square root of the acid dissociation constant ratio.
Details: Understanding dissociation helps predict acid strength, pH of solutions, and chemical equilibrium in reactions.
Tips: Enter the known degree of dissociation (0-1), both acid dissociation constants (must be > 0). The result will be capped at 1.0.
Q1: What range is valid for degree of dissociation?
A: The degree of dissociation ranges from 0 (no dissociation) to 1 (complete dissociation).
Q2: How do I find dissociation constants?
A: Ka values are typically found in chemistry reference tables or determined experimentally.
Q3: Why does the formula use a square root?
A: The square root relationship comes from the equilibrium constant expression for weak acid dissociation.
Q4: Can this be used for bases?
A: Yes, if you use the base dissociation constant (Kb) instead of Ka.
Q5: What if my result exceeds 1?
A: The calculator automatically caps results at 1.0, as dissociation cannot exceed 100%.