The tube, d, is to condense the bulk of the hydrochloric acid which distills over during the operation.
Scientific American Supplement, No. 362, December 9, 1882|Various
This, however, as soon as it passes into the atmosphere becomes changed into hydrochloric acid.
The Wonder Book of Volcanoes and Earthquakes|Edwin J. Houston
The dark-coloured soft mass is then removed from the alkaline liquid, dissolved in water, and hydrochloric acid460 added.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
Glycerin when treated with hydrochloric acid gives propenyl dichlorhydrin, which may be oxidized to s-dichloracetone.