A cotton swab is dipped into concentrated hydrochloric acid (producing hydrogen chloride gas) while a second on is dipped into concentrated aqueous ammonia (producing ammonia gas). Both cotton swabs ...

Strong acids such as hydrochloric acid, sulfuric acid and nitric acid are laboratory acids that have been mixed with a lot of water before putting them out for use. This is called diluting the acid.

The sodium reacts with the water and gets very hot ... of Solid sodium metal are placed in two different concentrations of two different acids (hydrochloric acid and nitric acid). The sodium reacts ...

and four parts of commercial hydrochloric acid ; the solution is evaporated to dryness in a water bath, the residue dissolved in water, filtered and diluted with 20 or 30 ounces of water and ...