T

Titration Curve

Quick Reference
Also Known AspH curve, potentiometric titration curve, acid-base titration curve

What is Titration Curve?

A titration curve is a graph of pH (or potential) versus volume of titrant added during a titration. It shows how the pH changes as titrant is added, revealing the equivalence point (where stoichiometric amounts of reactants have been mixed), buffer regions, and the appropriate indicator range. Different shapes of curves are seen for strong acid-strong base, weak acid-strong base, and polyprotic acid titrations.

Properties & Characteristics

Strong acid + strong base: S-shaped curve, equivalence point at pH 7. Weak acid + strong base: equivalence point pH > 7, buffer region where pH ≈ pKa. Weak base + strong acid: equivalence point pH < 7. Polyprotic acid: multiple inflection points. Equivalence point: maximum slope change. Buffer region: half-equivalence point pH ≈ pKa.

Uses & Applications

Selecting appropriate pH indicator for titration. Determining equivalence point. Calculating Ka or Kb from half-equivalence point. Pharmaceutical analysis. Food quality control. Water analysis. Teaching acid-base chemistry. Environmental monitoring (pH determination).

Safety Information

Titration reagents (strong acids, strong bases) are corrosive. Proper disposal of titration waste. Some titration systems (redox, EDTA) involve toxic reagents.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Titration Curve
Synonyms pH curve, potentiometric titration curve, acid-base titration curve

Frequently Asked Questions

A titration curve is a graph of pH (or potential) versus volume of titrant added during a titration. It shows how the pH changes as titrant is added, revealing the equivalence point (where stoichiometric amounts of reactants have been mixed), buffer regions, and the appropriate indicator range. Different shapes of curves are seen for strong acid-strong base, weak acid-strong base, and polyprotic acid titrations.

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