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 ...

Hydrochloric acid is a strong acid that can cause severe chemical burns if it comes in contact with your skin. Toilet cleaners, pool chemicals, and some fertilizers are common household sources of ...

ALL chemists admit that when sal-ammoniac is volatilised the vapour consists, if not wholly, at least in great part, of hydrochloric acid and ammonia gases in the free state. But this fact, so far as ...