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For example, sulfuric acid (H 2 SO 4) is a diprotic acid. Since only 0.5 mol of H 2 SO 4 are needed to neutralize 1 mol of OH −, the equivalence factor is: f eq (H 2 SO 4) = 0.5. If the concentration of a sulfuric acid solution is c(H 2 SO 4) = 1 mol/L, then its normality is 2 N. It can also be called a "2 normal" solution.
Hydrochloric acid has been used for dissolving calcium carbonate, e.g. such things as de-scaling kettles and for cleaning mortar off brickwork. When used on brickwork the reaction with the mortar only continues until the acid has all been converted, producing calcium chloride, carbon dioxide, and water: CaCO 3 + 2 HCl → CaCl 2 + CO 2 + H 2 O
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
c(OsO 4) = 5.1 kg/L / 254.23 g/mol = 20.1 mol/L. A typical protein in bacteria, such as E. coli, may have about 60 copies, and the volume of a bacterium is about 10 −15 L. Thus, the number concentration C is C = 60 / (10 −15 L) = 6 × 10 16 L −1. The molar concentration is c = C / N A = 6 × 10 16 L −1 / 6 × 10 23 ...
As 2 O 3 + 6 HCl → 2 AsCl 3 + 3 H 2 O. It can also be prepared by chlorination of arsenic at 80–85 °C, but this method requires elemental arsenic. [4] 2 As + 3 Cl 2 → 2 AsCl 3. Arsenic trichloride can be prepared by the reaction of arsenic oxide and sulfur monochloride. This method requires simple apparatus and proceeds efficiently: [8]
C 2 H Cl 3 O 2: Molar mass: 163.38 g·mol −1 Appearance Colorless to white, crystalline solid Odor: Sharp, pungent [1] Density: 1.63 g/cm 3: Melting point: 57 to 58 °C (135 to 136 °F; 330 to 331 K) [2] Boiling point: 196 to 197 °C (385 to 387 °F; 469 to 470 K) [2]
Rhodium(III) chloride refers to inorganic compounds with the formula RhCl 3 (H 2 O) n, where n varies from 0 to 3. These are diamagnetic red-brown solids. The soluble trihydrated (n = 3) salt is the usual compound of commerce. It is widely used to prepare compounds used in homogeneous catalysis. [2]
C 19 H 15 Cl Molar mass: 278.7754 g/mol Appearance white to yellow solid Density: 1.141 g/cm 3: Melting point: 109 to 112 °C (228 to 234 °F; 382 to 385 K) Boiling point: 230 °C (446 °F; 503 K) (at 20 mmHg) and 374.3 °C (at 760 mmHg) Solubility: soluble in chloroform, benzene, acetone, [1] ether, THF, hexane [2] Hazards Flash point