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Properties of substance:

lithium carbide

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

C2Li2

Structural formula as text:

Li2C2

Molar/atomic mass: 37.9

Decomposition temperature (°C):

600

Solubility (g/100 g of solvent):

water: reaction [Ref.]

Density:

1.65 (18°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster]
    2Li + 2C2H2 → 2LiC2H + H2
    2LiC2H → Li2C2 + C2H2
  2. [Ref.1]
    Li2CO3 + 4C → Li2C2 + 3CO
  3. [Ref.1aster]
    2Li + 2C → Li2C2
  4. [Ref.1aster]
    2LiH + 2C → Li2C2 + H2

Reactions:

  1. [Ref.1]
    Li2C2 → 2Li + 2C
  2. [Ref.1]
    Li2C2 + 2H2O → 2LiOH + C2H2

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

-59.46 (s)

References:

  1. Binneweis M., Milke E. Thermochemical Data of Elements and Compounds. - 2ed, 2002. - pp. 263
  2. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 125 [Russian]
  3. Остроушко Ю.И., Бучихин П.И. и др. Литий, его химия и технология. - М.: ИГУИАЭ, 1960. - pp. 52-53 [Russian]
  4. Плющев В.Е., Степин Б.Д. Химия и технология соединений лития, рубидия и цезия. - М.: Химия, 1970. - pp. 44-45 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 110-111 [Russian]
  6. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 316 [Russian]
  7. Химия и технология редких и рассеянных элементов. - Ч. 1. - М.: Высшая школа, 1976. - pp. 24-25 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru