Titration of sulfuric acid
A simple titration with sulfuric acid and sodium hydroxide is performed.
acids/bases
Loss of mass of marble due to reaction with nitric acid
The effect of nitric acid on marble chips is demonstrated.
Burning of sulfur to produce sulfur dioxide
Sulfur is burned in a deflagrating spoon in a flask, forming sulfur dioxide in the synthesis reaction.
Electrolysis of a sodium sulfate solution
An electric current is passed through a sodium sulfate solution. Gases are collected at the electrodes are tested for pH.