Nitric

She needed 10.5 liters of nitric acid for the experiment.

The original acid test used hydrochloric and nitric acid to distinguish gold from base metals.

It is the instability of Nitric Acid therefore—its proneness to part with Oxygen—which renders it superior to the Sulphuric and to most acids in dissolving Silver and various other substances, both organic and inorganic.

This medical professor says his team found that within hours of donation, banked blood begins to lose nitric oxide, a gas that is crucial for the delivery of oxygen to tissues.

Silver nitrate solution added to an aqueous solution of salvarsan acidified with dilute nitric acid yields a dark-yellow precipitate which rapidly becomes black.

When arsenopyrite (FeAsS) is dissolved in nitric acid, elemental sulfur is released and arsenic acid is formed.

In the case of nitric acid, however, the employment of the aræometer introduces far greater errors than when it is used for sulphuric acid, hydrochloric acid, and in most other cases, as the concentrated nitric acids as a rule always contain nitrogen tetroxide in solution, the quantity being seldom less than 1 per cent., but more generally several per cent., which makes its strength when taken with the aræometer seem greater than it actually is.