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Its main laboratory use is as a reagent for the gravimetric determination of sulfates. The sulfate compound being analyzed is dissolved in water and hydrochloric acid is added. When barium chloride solution is added, the sulfate present precipitates as barium sulfate, which is then filtered through ashless filter paper.
Phosphoryl chloride: used to make phosphate esters such as tricresyl phosphate: Potassium dichromate: a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications Potassium hydroxide: a strong base; precursor to most soft and liquid soaps as well as numerous potassium-containing ...
Coloured flames of methanol solutions of different compounds, burning on cotton wool. From left to right: lithium chloride, strontium chloride, calcium chloride, sodium chloride, barium chloride, trimethyl borate, copper chloride, cesium chloride and potassium chloride. Some common elements and their corresponding colors are:
Barium azide – Ba(N 3) 2 [84] Barium bromide – BaBr 2; Barium carbonate – BaCO 3 [85] Barium chlorate – Ba(ClO 3) 2 [86] Barium chloride – BaCl 2 [87] Barium chromate – BaCrO 4 [88] Barium ferrate – BaFeO 4; Barium ferrite – BaFe 12 O 19 [89] Barium fluoride – BaF 2 [90] Barium hydroxide – Ba(OH) 2 [91] [92] Barium iodide ...
The reagent used can be any substance that gives S 2− ions in such solutions; most commonly used are hydrogen sulfide (at 0.2-0.3 M), thioacetamide (at 0.3-0.6 M), addition of hydrogen sulfide can often prove to be a lumbersome process and therefore sodium sulfide can also serve the purpose. The test with the sulfide ion must be conducted in ...
Humans have processed common salt (sodium chloride) for over 8000 years, using it first as a food seasoning and preservative, and now also in manufacturing, agriculture, water conditioning, for de-icing roads, and many other uses. [83] Many salts are so widely used in society that they go by common names unrelated to their chemical identity.
Barium, typically as barium nitrate imparts a yellow or "apple" green color to fireworks; [30] for brilliant green barium chloride is used. Barium peroxide is a catalyst in the aluminothermic reaction for welding rail tracks. It is also a green flare in tracer ammunition and a bleaching agent. [31] Barium titanate is a promising electroceramic ...
Cobalt(II) chloride: CoCl 2: dep blue Cobalt(II) chloride hexahydrate: CoCl 2 ·6H 2 O deep magenta Manganese(II) chloride tetrahydrate: MnCl 2 ·4H 2 O pink Copper(II) chloride dihydrate: CuCl 2 ·2H 2 O blue-green Nickel(II) chloride hexahydrate: NiCl 2 ·6H 2 O green Lead(II) iodide: PbI 2: yellow Ammonium dichromate (NH 4) 2 Cr 2 O 7: orange