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Physical properties of hydrochloric acid, such as boiling and melting points, density, and pH, depend on the concentration or molarity of HCl in the aqueous solution. They range from those of water at very low concentrations approaching 0% HCl to values for fuming hydrochloric acid at over 40% HCl.
The hydrochloric acid provides a ready supply of chloride ions (Cl −), which react with the gold ions to produce tetrachloroaurate(III) anions ([AuCl 4] −), also in solution. The reaction with hydrochloric acid is an equilibrium reaction that favors formation of tetrachloroaurate(III) anions.
This is an accepted version of this page This is the latest accepted revision, reviewed on 29 September 2024. Not to be confused with sodium chloride. Sodium chlorite The sodium cation Space-filling model of the chlorite anion Names IUPAC name Sodium chlorite Other names Chlorous acid, sodium salt Textone Identifiers CAS Number 7758-19-2 Y 49658-21-1 (trihydrate) Y 3D model (JSmol) Interactive ...
Strontium chloride can be prepared by treating aqueous strontium hydroxide or strontium carbonate with hydrochloric acid: Sr(OH) 2 + 2 HCl → SrCl 2 + 2 H 2 O. Crystallization from cold aqueous solution gives the hexahydrate, SrCl 2 ·6H 2 O. Dehydration of this salt occurs in stages, commencing above 61 °C (142 °F). Full dehydration occurs ...
Baumé degrees (light) was calibrated with 0 °Bé (light) being the density of 10% NaCl in water by mass and 10 °Bé (light) set to the density of water. Consider, at near room temperature: +100 °Bé (specific gravity, 3.325) would be among the densest fluids known (except some liquid metals), such as diiodomethane .
Aqueous solutions of iron(III) chloride are also produced industrially from a number of iron precursors, including iron oxides: Fe 2 O 3 + 6 HCl + 9 H 2 O → 2 FeCl 3 (H 2 O) 6. In complementary route, iron metal can be oxidized by hydrochloric acid followed by chlorination: [10] Fe + 2 HCl → FeCl 2 + H 2 FeCl 2 + 0.5 Cl 2 + 6 H 2 O → FeCl ...
The dihydrate, FeCl 2 (H 2 O) 2, crystallizes from concentrated hydrochloric acid. [7] The dihydrate is a coordination polymer. Each Fe center is coordinated to four doubly bridging chloride ligands. The octahedron is completed by a pair of mutually trans aquo ligands. [8] Subunit of FeCl 2 (H 2 O) 2 lattice.
The density of the solution is 1.093 g/mL at 5% concentration, [22] and 1.21 g/mL at 14%, 20 °C. [23] Stoichiometric solutions are fairly alkaline, with pH 11 or higher [8] since the hypochlorite ion is a weak base: OCl − + H 2 O ⇌ HOCl + OH −. The following species and equilibria are present in NaOCl/NaCl solutions: [24] HOCl(aq) ⇌ H ...