Potassium permanganate is used to make oxygen
Tools/Materials
Alcohol lamp test tank gas collection cylinder
Methods/Steps
1
Check the air tightness of the device
2
Connect the device, load the medicine
3
Preheat, focus on heating, until there are continuous uniform bubbles emerge, collect gas
4
This article is based on experience
Matters needing attention
1
Air tightness test
2
preheat
3
That's it. Abort first