pOH Formula:
From: | To: |
Definition: This calculator determines the pOH (negative logarithm of hydroxide ion concentration) when two strong base solutions are mixed.
Purpose: It helps chemists and students calculate the basicity of a solution formed by mixing two different strong base solutions.
The calculator uses the formula:
Where:
Explanation: The formula calculates the weighted average concentration of hydroxide ions from both solutions, then takes the negative logarithm.
Details: pOH is crucial for understanding solution basicity, chemical equilibrium, and reaction conditions in various chemical processes.
Tips: Enter the normality and volume for both solutions. All volumes must be > 0. The calculator handles very small concentrations (default values shown).
Q1: What's the relationship between pH and pOH?
A: At 25°C, pH + pOH = 14. You can calculate pH from pOH using this relationship.
Q2: Why use normality instead of molarity?
A: Normality accounts for equivalents of hydroxide ions, which is more appropriate for pOH calculations.
Q3: Can I use this for weak bases?
A: No, this calculator is specifically for strong bases that dissociate completely.
Q4: What if I mix more than two solutions?
A: The formula can be extended by adding more terms to the numerator and denominator.
Q5: How precise are the results?
A: Results are precise to 6 decimal places, but real-world accuracy depends on input measurements.