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Chrome alum

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Chrome alum

Molecular formula: CrKO8S2 CAS# 10141-00-1
Categories: Inorganic salt , Double salt
Names
English:
Chrome alum [Wiki]
Chromium alum
Chromium potassium sulfate(IUPAC)
Chromium(III) potassium sulfate
EINECS:233-401-6
Sulfuric acid,chromium(3+) potassium salt (2:1:1)(CAS)
chromous potassium disulfate
Русский:
Сульфат хрома(III)-калия [Wiki]
хром-калий сернокислый
хромокалиевые квасцы [Wiki]
German:
Chrom(III)-kaliumsulfat-Dodecahydrat [Wiki]
Chromalaun
Chromkaliumsulfat
Kaliumchrom(III)-sulfat-Dodecahydrat
Italiano:
Allume di cromo [Wiki]
solfato di potassio e cromo(III) dodecaidrato

Variants of the formula:

KCr(SO4)2
K(+1)Cr(+3)(S(+6)O(-2)4)2
K^+/0O`^-# -S<`||O>|O`|-O^-\0Cr^3+/0O`^-# -S`|O|<|O^->=O
$slope(45)K^+/0O`^-\S/O`/`/O/\O^-/0Cr^3+/0O`^-\S/O`/\O`\`/O`^-
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent

Reactions in which Chrome alum is involved

  • K2SO4 + Cr2(SO4)3 -> 2KCr(SO4)2
  • K2Cr2O7 + 3CH3CH2OH + 4H2SO4 -> 2KCr(SO4)2"|v" + 3CH3CHO + 7H2O
  • 4KCr(SO4)2 "700-900^oC"--> 2K2SO4 + 2Cr2O3 + 6SO2"|^" + 3O2"|^"
  • 2KCr(SO4)2 + 6H2O "[tau],100^oC"--> H2[Cr2(H2O)4(SO4)3(OH)2] + K2SO4
  • KCr(SO4)2 + 3KOH -> Cr(OH)3"|v" + 2K2SO4