Periodic table of elements

Silver sulfide [Ag2S]

SOLUBILITY:
water [H2O]: ?.?.

PROPERTIES:
black cubic crystals
M (molar mass): 247,800 g/mol
MP (melting point): 825 °C
D (density): 7,317 (20, ?/??3, ?.)
ΔHmelt (molar enthalpy of melting): 14,06 kJ/mol
ΔH°298 (Standard molar enthalpy of reaction at 298 К): -32,8 (?) kJ/mol
ΔG°298 (standard molar Gibbs energy of reaction at 298 К): -40,8 (?) kJ/mol
298 (standard molar entropy at 298 К): 144 (?) J/(mol•К)
p (standard molar heat capacity): 76,53 (?) J/(mol•К)
pSP (solubility product index): 49,2 (20, ????)

LITERARY REFERENCES:
• Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1 - New York: D. Van Nostrand Company, 1940. – P. 73
• ???????? ?.?. ?????? ????? ?????. - ?.2. - ?.: ?????, 1973. – P. 268
• ????????? ?.?., ????? ?.?. ??????? ?????????? ??????????. - 2-? ???. - ?.: ?????, 1978. – P. 100

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