⚪ Amphoteric hydroxides: virtual chemistry experiment
Aluminium hydroxide precipitates, then dissolves again in excess NaOH.
▶ Launch this experiment freeRuns in your browser on any phone, tablet or laptop. No sign-up, no install, no chemicals needed.
What you'll do
- Add 1 mL NaOH to each tube: white precipitates
- Add excess NaOH (10 mL): Al(OH)₃ dissolves, Mg(OH)₂ doesn’t
The chemistry behind it
Al(OH)₃ + OH⁻ → [Al(OH)₄]⁻. Amphoteric hydroxides react with both acids and bases.
Why do this experiment virtually?
Many school labs can't run this experiment safely or don't have the chemicals. In Faradium you set it up in seconds, repeat it as often as you like, change the amounts and see the real result: colours, gases, precipitates and temperature changes. The lab notebook records every observation with the balanced equation for your write-up.
Frequently asked questions
How do you do the amphoteric hydroxides experiment?
1. Add 1 mL NaOH to each tube: white precipitates 2. Add excess NaOH (10 mL): Al(OH)₃ dissolves, Mg(OH)₂ doesn’t You can run every step free in the Faradium virtual chemistry lab.
What is the chemistry behind amphoteric hydroxides?
Al(OH)₃ + OH⁻ → [Al(OH)₄]⁻. Amphoteric hydroxides react with both acids and bases.
Can I do the amphoteric hydroxides experiment online for free?
Yes. Faradium sets up the bench for you and ticks off each step as you complete it. It runs in any browser on a phone, tablet or laptop with no sign-up and no chemicals.
Chemistry in this experiment
Elements involved: Hydrogen (H), Oxygen (O), Sodium (Na).
Molar masses you may need: NaOH.
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