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Lead perchlorate trihydrate is produced by the reaction of lead(II) oxide, lead carbonate, or lead nitrate by perchloric acid: . Pb(NO 3) 2 + HClO 4 → Pb(ClO 4) 2 + HNO 3. The excess perchloric acid was removed by first heating the solution to 125 °C, then heating it under moist air at 160 °C to remove the perchloric acid by converting the acid to the dihydrate.
CoSO 4 + Ba(ClO 3) 2 → BaSO 4 + Co(ClO 3) 2 It is also possible to make it by the reaction of any chlorate with a cobalt(II) salt, however the pure product is harder to separate. References
CoCO 3 + 2 HClO 4 → Co(ClO 4) 2 + H 2 O + CO 2 The anhydrous form cannot be produced from the hexahydrate by heating, as it instead decomposes to cobalt(II,III) oxide at 170 °C. Instead, anhydrous cobalt(II) perchlorate is produced from the reaction of dichlorine hexoxide and cobalt(II) chloride , followed by heating in a vacuum at 75 °C.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Pb is used in HCl service even though the PbCl 2 formed is slightly soluble in HCl. Addition of 6–25% of antimony (Sb) increases corrosion resistance. [16] A basic chloride of lead, PbCl 2 ·Pb(OH) 2, is known as Pattinson's white lead and is used as pigment in white paint. [17]
Its chemical formula is usually expressed as Pb(CH 3 COO) 2 or Pb(OAc) 2, where Ac represents the acetyl group. Like many other lead compounds, it causes lead poisoning. Lead acetate is soluble in water and glycerin. With water it forms the trihydrate, Pb(OAc) 2 ·3H 2 O, a colourless or white efflorescent monoclinic crystalline substance.
Lead tetrachloride can be made by reacting lead(II) chloride PbCl 2, and hydrochloric acid HCl, in the presence of chlorine gas (Cl 2), [5] leading to the formation of chloroplumbic acid H 2 PbCl 6. It is then converted to the ammonium salt (NH 4 ) 2 PbCl 6 by adding ammonium chloride (NH 4 Cl).
Copper(II) chlorate is a chemical compound of the transition metal copper and the chlorate anion with basic formula Cu(ClO 3) 2. Copper chlorate is an oxidiser. [5] It commonly forms the tetrahydrate, Cu(ClO 3) 2 ·4H 2 O.