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[Acids & Bases]: Acid-Base Neutralization Chemistry Experiment

Select a strong acid and strong base, then enter the concentration and known volume of one solution. The experiment calculates the volume of the other solution required for stoichiometric neutralization, corresponding to pH ≈ 7 in this ideal strong-acid/strong-base model.

Acid Concentration, Base Concentration and Volume

For a strong monoprotic acid reacting with a strong base in a 1:1 ratio, neutralization occurs when equal amounts in moles of acid and base have reacted.

Moles = concentration × volume (L)HCl and HNO₃ supply 1 H⁺/moleH₂SO₄ supplies 2 H⁺/moleNaOH supplies 1 OH⁻/moleCa(OH)₂ supplies 2 OH⁻/mole

Interactive neutralization experiment

Required acid volume25.00 mL
Required base volume25.00 mL
Neutral pointpH ≈ 7
Balanced equation
HCl + NaOH → NaCl + H₂O
ACID25.0 mL + BASE25.0 mL → pH ≈ 7 Neutralization
Important: pH 7 is an idealization here for complete reaction between the listed strong acids and strong bases at ordinary classroom conditions. The calculation is based on H⁺ and OH⁻ equivalents, not simply equal liquid volumes.

How Does an Acid-Base Neutralization Reaction Work?

An acid-base neutralization reaction occurs when an acid reacts with a base to form salt and water. The amount of acid required to neutralize a base depends on the concentration, volume and stoichiometric ratio of the reaction.

Change the acid or base concentration and volume in the interactive simulation to investigate how much reactant is required for neutralization.

Acid-Base Neutralization Python Model

This Python model calculates the amount of acid or base required for neutralization. Change the concentration or volume and compare the calculated result with the interactive chemistry simulation.