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Properties of substance:

vanadium

Group of substances:

inorganic

Physical appearance:

cubic metal

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

V

Structural formula as text:

V

Molar/atomic mass: 50.94

Melting point (°C):

1900

Boiling point (°C):

3400

Solubility (g/100 g of solvent):

lithium molten: 0.0075 (700°C) [Ref.]
mercury: 0.00005 (20°C) [Ref.]
sodium fused: 0.0002 (700°C) [Ref.]
water: insoluble [Ref.]

Numerical data:

Year of discovery: 1830
Superconducting temperature (K): 5.46

Density:

5.96 (20°C, g/cm3)

Reactions:

  1. [Ref.1]
    4V + 5O2 → 2V2O5
  2. [Ref.1]
    V + 6HNO3 → VO2NO3 + 5NO2 + 3H2O
  3. [Ref.1]
    2V + 12HF → 2H3[VF6] + 3H2
  4. [Ref.1]
    V + 3H2SO4 → VOSO4 + 2SO2 + 3H2O
  5. [Ref.1]
    2V + N2 → 2VN

Vapour pressure (Torr):

0.01 (1850°C)
0.1 (2044°C)
1 (2282°C)
10 (2590°C)
100 (2955°C)

Electrode potential:

V2+ + 2e- → V, E = -1.175 V (water, 25°C)

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

0 (s)

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

0 (s)

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

28.9 (s)

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

24.9 (s)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

23

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

444.8

References:

  1. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 50 [Russian]
  2. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 479, 481-482 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 57 [Russian]
  4. Успехи химии. - 1962. - Т.31, №9. - pp. 1076-1103 [Russian]
  5. Энциклопедия для детей. - Т.17: Химия. - М.: Аванта+, 2004. - pp. 257 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru