Should nitrous acid still show itself, some more hydrochloric acid is added and the boiling continued.
"Scientific American Supplement, No. 324, March 18, 1882" by Various
Strong nitric acid yields plenty of oxygen at the positive pole, but no gas (only nitrous acid) at the negative pole.
"Experimental Researches in Electricity, Volume 1" by Michael Faraday
The vapor of nitrous acid is conducted through a glass tube into water, upon which the oil to be tested is placed.
"The Art of Perfumery" by G. W. Septimus Piesse
Oil of aniseed 1/4 ounce, nitrous acid 2 to 3 drops, musk (triturated with a little sugar) 1 grain.
"Natural History of the Mammalia of India and Ceylon" by Robert A. Sterndale
He separated nitrous and oxygenous airs, and first exhibited acids and alkalies in a gaseous form.
"Continental Monthly , Vol. 6, No. 1, July, 1864" by Various
By the action of nitrous acid upon the salts of the primary organic amines the so-called diazo compounds are formed.
"The Dyeing of Cotton Fabrics" by Franklin Beech
They are unaffected by nitrous acid, and their lead salts are soluble in ether.
"The Handbook of Soap Manufacture" by W. H. Simmons
The nitric acid may also be partly decomposed, and is by this means converted into NITROUS ACID.
"Conversations on Chemistry, V. 1-2" by Jane Marcet
Nitrous acid, converted into nitric acid, 168; formed from ammonia, 167.
"Manures and the principles of manuring" by Charles Morton Aikman
Flies and spiders die in acid air, but not so quickly as in nitrous air.
"Experiments and Observations on Different Kinds of Air" by Joseph Priestley