Preparation of HCl Hydrochloric Acid

Описание: Bring down the Ferrous sulphide (FeS) to the work space
Bring down the spatula to the work space
Collect the Ferrous sulphide (FeS) from watch glass to the empty boiling test tube.
Bring back the spatula to its stand
Take out the watch glass from the work bench
Switch on the regulator of the Bunsen burner
Bring down the lighter to the work space
Ignite the Bunsen burner with the lighter
Take out the lighter from the work bench
Pick up the boiling test tube from the boiling test tube stand
Place the boiling test tube on to the Bunsen burner
Add dilute sulphuric acid from the beaker to the boiling test tube
Bring back the beaker to the work space
Pick up the blue litmus paper
Expose it to the gas evolved from the boiling test tube
Bring down the filter paper
Place the filter paper in to the lead acetate solution
Place the filter paper into the boiling test tube
Takeout the filter paper from the work benchHydrochloric acid is a clear, colorless, highly pungent solution of hydrogen chloride (HCl) in water. It is a highly corrosive, strong mineral acid with many industrial uses. Hydrochloric acid is found naturally in gastric acid.

It was historically called acidum salis, muriatic acid, and spirits of salt because it was produced from rock salt and green vitriol (by Basilius Valentinus in the 15th century) and later from the chemically similar substances common salt and sulfuric acid (by Johann Rudolph Glauber in the 17th century). Free hydrochloric acid was first formally described in the 16th century by Libavius. Later, it was used by chemists such as Glauber, Priestley, and Davy in their scientific research.

With major production starting in the Industrial Revolution, hydrochloric acid is used in the chemical industry as a chemical reagent in the large-scale production of vinyl chloride for PVC plastic, and MDI/TDI for polyurethane. It has numerous smaller-scale applications, including household cleaning, production of gelatin and other food additives, descaling, and leather processing. About 20 million tonnes of hydrochloric acid are produced worldwide annually.
Related compounds
Hydrofluoric acid
Hydrobromic acid
Hydroiodic acid
Supplementary data page
Structure and
properties
Refractive index (n),
Dielectric constant (εr), etc.
Thermodynamic
data
Phase behaviour
solid–liquid–gas
Spectral data
UV, IR, NMR, MSHydrochloric acid was known to European alchemists as spirits of salt or acidum salis (salt acid). Both names are still used, especially in other languages, such as German: Salzsäure, Dutch: Zoutzuur, Swedish: Saltsyra, and Polish: kwas solny. Gaseous HCl was called marine acid air. The old (pre-systematic) name muriatic acid has the same origin (muriatic means "pertaining to brine or salt", and thence muriate means hydrochloride), and this name is still sometimes used. The name "hydrochloric acid" was coined by the French chemist Joseph Louis Gay-Lussac in 1814.

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