As a barium hydroxide solution is added to a sulfuric acid solution, the solution's conductivity gradually decreases. When the acid is consumed, the conductivity approaches zero, then rises again as more base is added.
Extraction of an acid with a base using a separatory funnel is demonstrated. In this initial step, the aqueous and organic solvents along with an indicator are added to the funnel.
Extraction of an acid with a base using a separatory funnel is demonstrated. In this step, aqueous base is added and the result noted.
Extraction of an acid with a base using a separatory funnel is demonstrated. In this step, aqueous acid is added and the result noted.
The reaction of a copper penny (minted pre-1982) and concentrated nitric acid (15 M) is shown. Red-brown nitrogen dioxide is generated and some of the copper dissolves to form a blue solution of copper(II) nitrate.
The electrical conductivity apparatus circuit is completed by an aqueous solution of hydrochloric acid.
An electric current is passed through a sulfuric acid solution. Gases collected at the electrodes are tested.
Electrolysis of a hydrochloric acid solution produces oxygen at the anode and hydrogen at the cathode.