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Properties of substance:

zinc sulfate heptahydrate

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

H14O11SZn

Structural formula as text:

ZnSO4 * 7H2O

Molar/atomic mass: 287.54

Decomposition temperature (°C):

280

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
ethanol: sparingly soluble [Ref.]
ethanol: practically insoluble [Ref.]
glycerol: 10 (20°C) [Ref.]
methanol: 5.9 (18°C) [Ref.]
water: very easily soluble [Ref.]

Density:

1.97 (20°C, g/cm3)

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

-3078.5 (s)

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

-2563.9 (s)

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

388.7 (s)

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

381.4 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-100
  2. Беликов В.Г. Учебное пособие по фармацевтической химии. - М.: Медицина, 1979. - pp. 59 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 113 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 254-255 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru