Calcium chloride is a chemical compound made up of calcium ions and chlorine ions. The ions are held together by an ionic, or weak salt bond. Mixing calcium chloride with water is an exothermic reaction, which means that the combination of the two substances releases heat. Thus, when you ad...
Proton transfer from the excited 4-hydroxy-1-naphthalenesulphonate to the water solvent is studied in n-alcohol/water (70:30) mixtures in the presence of calcium chloride. The proton acceptor concentration is found to increase initially with an increase in the concentration of calcium chloride ...
1. The chemical formula is CaCl2, and its molecular weight is 110.98 g/mol; 2. Anhydrous calcium chloride is colorless crystal and has a high solubility; 3. In the air, it is easy to absorb moisture to form hydrate, which can be dissolved in water, release heat, and form a hot solut...
“quick,” or living, lime. The reaction of quicklime with water is sometimes used in portable heat sources. One of the oldest known products of achemical reaction, quicklime is used extensively as a building material. It is sometimes used directly as a fertilizer, although calcium carbonate ...
Formerly produced byelectrolysisof anhydrous calcium chloride, pure calcium metal is now made commercially by heating lime with aluminum. The metal reacts slowly withoxygen, water vapour, andnitrogenof the air to form a yellow coating of the oxide, hydroxide, and nitride. It burns in air or pu...
Chemical PropertiesCalcium chloride is a colorless to off-white crystalline solid which is deliquescent (absorb water). When heated, crystals lose water @ 100C. Usescosmetic ingredient. Food grade calcium chloride is used in various applications within the food and beverage industries. ...
When a piece of calcium is placed into a solution of hydrochloric acid, it undergoes two vigorous reactions. However, the reactions that occur when HCl is dissolved in water (H2O) form the basis for understanding the reactions that occur when
metal, and retractable canopy shall be constructed of fire retardant materials (e.g. polyvinylchloride(PVC) tarpaulin). legco.gov.hk legco.gov.hk 攤檔構築物( 包括固定簷篷及檔身) 須以金屬搭蓋,而伸縮簷篷須以 耐燃物料(例如聚氯乙烯(PVC)隔網阻燃帆布) 搭蓋。
This salt can also be prepared from calcium chloride by an electrochemical method: CaCl2 (aq)+ 6H2O (aq)+ e-→Ca(ClO3)2+ 6H2 using a platinum anode and a rotating stainless steel cathode. Yields of the dihydrate up to 78% have been achieved. The hydrogen produced can be “burned” ...
Solubility data in water, methanol and ethanol [36] are given in Fig. 2. Table 1. Properties of calcium chloride hydrates. PropertyCaCl2·6H2OCaCl2·4H2OCaCl2·2H2OCaCl2·H2OCaCl2 Melting point [°C] 28–30 [1,13,16,18,27,48–52]32 [28] 45.3 [48,49]39 [13,24,25] 176 [48,49...