Alok Das
Alok DasChemistry · Research
Chemistry · Advanced Concepts

Acid–Base Titration Simulator

Analyze neutralization curves and stoichiometric equivalence points during strong and weak acid titrations.

Acid:
Indicator:
0.1 M NaOH
25 mL HCl
Analyte Flask (phenolphthalein)
Titration Curve (pH vs. Vol NaOH)Equivalence: 25.0 mL
1470025 mL50 mL
NaOH Added0.0 mL
Current pH1.00
StateExcess Acid
Local Laboratory Notebook
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Volumetric Stoichiometry & Titration Curves

Titration is a quantitative analytical technique in which a standard solution of known concentration (titrant) is delivered incrementally to an analyte solution until stoichiometric equivalence is attained:

Mₐ × Vₐ = M_b × V_b (at 1:1 equivalence)

For a strong acid–strong base system, the equivalence pH is exactly 7.00. For a weak acid (e.g., acetic acid CH₃COOH), the conjugate base (acetate CH₃COO⁻) undergoes hydrolysis, producing an equivalence pH in the basic range (typically ~8.7).

Model Assumptions & Experimental Conditions

  • Monoprotic acid-base system undergoing 1:1 molar reaction.
  • Instantaneous chemical equilibrium and homogeneous mixing.
  • Standard laboratory temperature maintained without heat of neutralization distortion.

Frequently Asked Questions

What is an equivalence point?

The equivalence point is the exact point in a titration where chemically equivalent stoichiometric amounts of titrant and analyte have combined.

Why does the pH rise steeply near equivalence?

Near equivalence, almost all analyte acid has been neutralized, so a single fraction of a drop introduces a massive fractional change in [H₃O⁺] concentration.

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These interactive tools are personal side-projects built for exploration and utility. My primary professional commitment is in M.Sc. Chemistry, analytical research, and laboratory methodology.

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