Formula Used:
From: | To: |
Definition: This calculator determines the concentration of a second weak acid based on the concentration of the first acid, their dissociation constants, and relative strength.
Purpose: It helps chemists and students compare and calculate acid concentrations when studying acid-base chemistry and equilibrium.
The calculator uses the formula:
Where:
Explanation: The formula relates the concentrations of two weak acids through their dissociation constants and relative strength.
Details: Accurate acid concentration calculations are essential for preparing buffer solutions, predicting reaction outcomes, and understanding acid-base equilibria.
Tips: Enter the concentration of acid 1, both dissociation constants (default values for common weak acids provided), and their relative strength. All values must be > 0.
Q1: What is the relative strength of acids?
A: It's the ratio of hydrogen ion concentrations of acid 1 compared to acid 2 under the same conditions.
Q2: Where can I find dissociation constants for acids?
A: Ka values are typically found in chemistry reference tables or textbooks.
Q3: Why is the relative strength squared in the formula?
A: The squared term accounts for the quadratic relationship between concentration and acid strength.
Q4: Can I use this for strong acids?
A: No, this calculator is specifically for weak acids that partially dissociate.
Q5: What units should I use for concentration?
A: The calculator uses mol/m³, but you can convert from other units (like mol/L) as needed.