Ch ChemAI

All experiments › Acids, bases and salts

Strong and weak acids

Same concentration, very different behaviour.

Topic: Acids, bases and saltsGrade: 11Free

🧪 Start the experiment — free

Runs in the browser on phones, tablets and computers. No sign-up needed. For teachers: assign any experiment to a class, see results and calculations.

What you do

  1. Turn on the pH meter. Both acids are 0.5 M. Why are the pH values different?
  2. Add magnesium to both tubes and compare how fast the measuring tubes fill with hydrogen.
  3. Add universal indicator to both tubes.

More experiments on this topic

Neutralisation with an indicatorTurn a pink base colourless by adding acid, and watch the temperature rise.Red-cabbage rainbowA natural indicator shows a different colour at every pH.Making a salt: copper sulfateBase + acid → salt + water, with copper(II) oxide.The hydrogen balloonCollect the gas from a metal and an acid in a balloon — then light it.pH titration curveAdd acid from a burette and draw the S-shaped curve.Making a salt: copper(II) sulfate crystalsReact an insoluble base with an acid, filter off the excess and crystallise the salt.