Acids, bases and salts · Grade 11
Strong and weak acids
ChemAI · Worksheet
NameClassDate
Aim
Same concentration, very different behaviour.
Before you start: what do you predict will happen? Why?
What you do
| Step | What I observed | |
|---|---|---|
| 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. |
Questions
- Write a word or symbol equation for one reaction you observed.
- Explain your most important observation using particles, ions or energy.
- Was your prediction right? What would you change to get a more reliable result?