# pH

## Electrolysis of a sulfuric acid solution

An electric current is passed through a sulfuric acid solution. Gases collected at the electrodes are tested.

## Electrolysis of a neutral solution animation

This animation simulates the electrolysis of a neutral aqueous solution.

## Electrolysis of hydrochloric acid solution with indicator

In aqueous hydrochloric acid, the electrolyzed solution is acidic at both electrodes.

## Electrolysis of sodium hydroxide solution with indicator

In aqueous sodium hydroxide, the electrolyzed solution is basic at both electrodes.

## Electrolysis of sodium chloride solution with indicator

In neutral sodium chloride, base is produced at the cathode and acid at the anode.