1. What is Concentration of Weak Base Calculator?

Definition: This calculator determines the concentration of a weak base using the dissociation constant and concentrations of its ions.

Purpose: It helps chemistry students and professionals calculate the initial concentration of a weak base from equilibrium measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BOH \) — Concentration of weak base (mol/m³)
• \( [OH^-] \) — Concentration of hydroxyl ion (mol/m³)
• \( [B^+] \) — Concentration of cation in weak base (mol/m³)
• \( K_b \) — Dissociation constant of weak base

Explanation: The product of ion concentrations is divided by the dissociation constant to find the original weak base concentration.

3. Importance of Weak Base Calculations

Details: Accurate weak base concentration calculations are essential for buffer preparation, pH control, and chemical equilibrium studies.

4. Using the Calculator

Tips: Enter the hydroxyl ion concentration, cation concentration, and dissociation constant. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a weak base?
A: A weak base is a base that only partially dissociates in aqueous solution, establishing an equilibrium.

Q2: How do I measure hydroxyl ion concentration?
A: Hydroxyl ion concentration can be determined through pH measurements or titration experiments.

Q3: What are typical Kb values for weak bases?
A: Kb values typically range from 10⁻² to 10⁻¹², with smaller values indicating weaker bases.

Q4: Can I use this for strong bases?
A: No, this formula only applies to weak bases that establish equilibrium.

Q5: What units should I use?
A: The calculator uses mol/m³, but you can convert from other units as needed.