Acids & Equilibrium

pH, titration, buffers, Ka, Kb and equilibrium constants.

• Acid-Base Titration Calculator Unknown concentration or titrant volume at the equivalence point, using the coefficients of the balanced equation.
• Buffer Capacity Calculator Buffer capacity from total concentration, pKa and pH, using the Van Slyke equation.
• Equilibrium Constant Calculator Equilibrium constant Kc from equilibrium concentrations and the coefficients of aA + bB ⇌ cC + dD.
• Henderson-Hasselbalch Calculator Buffer pH from pKa and the conjugate base to acid ratio, or the ratio needed for a target pH.
• Ka and Kb from pH Calculator Work out Ka or Kb and the percent ionised from a measured pH and starting concentration.
• Ka, Kb, pKa and pKb Calculator Convert between Ka, Kb, pKa and pKb for a conjugate acid-base pair at 25 °C.
• pH, pOH and Hydrogen Ion Concentration Calculator Convert between pH, pOH, hydrogen ion concentration and hydroxide ion concentration.
• Reaction Quotient Calculator Reaction quotient Q from the current concentrations, compared with K to show which way a reaction will shift.
• Solubility Product (Ksp) Calculator Ksp from molar solubility, or molar solubility from Ksp, for a salt of any simple ion ratio.