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Properties of substance:

copper(II) oxide

Group of substances:

inorganic

Physical appearance:

black monoclinic crystals

Empirical formula (Hill's system for organic substances):

CuO

Structural formula as text:

CuO

Molar/atomic mass: 79.55

Decomposition temperature (°C):

800

Solubility (g/100 g of solvent):

boron oxide molten: 0.3 (900°C) [Ref.]
water: insoluble [Ref.]

Density:

6.45 (20°C, g/cm3)

Reactions:

  1. [Ref.1]
    CuO + H2 → Cu + H2O
  2. [Ref.1]
    CuO + 4NH3 + H2O → [Cu(NH3)4](OH)2

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-162 (s)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

-129.4 (s)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

42.63 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

42.3 (s)

LD50 (mg/kg):

470 (rats, oral)
273 (mice, intraperitoneal)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 494
  2. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 67 [Russian]
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 270 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 80 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 124-125 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru