1. What is pOH of Mixture of Two Strong Bases?

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.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( pOH \) — Negative log of hydroxyl concentration
• \( N_1 \) — Normality of solution 1 (eq/L)
• \( V_1 \) — Volume of solution 1 (L)
• \( N_2 \) — Normality of solution 2 (eq/L)
• \( V_2 \) — Volume of solution 2 (L)

Explanation: The formula calculates the weighted average concentration of hydroxide ions from both solutions, then takes the negative logarithm.

3. Importance of pOH Calculation

Details: pOH is crucial for understanding solution basicity, chemical equilibrium, and reaction conditions in various chemical processes.

4. Using the Calculator

Tips: Enter the normality and volume for both solutions. All volumes must be > 0. The calculator handles very small concentrations (default values shown).

5. Frequently Asked Questions (FAQ)

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.