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  2. Ammonium iron(II) sulfate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_iron(II)_sulfate

    Ammonium iron(II) sulfate, or Mohr's salt, is the inorganic compound with the formula (NH 4) 2 SO 4 ·Fe(SO 4)·6H 2 O. Containing two different cations, Fe 2+ and NH + 4, it is classified as a double salt of ferrous sulfate and ammonium sulfate. It is a common laboratory reagent because it is readily crystallized, and crystals resist oxidation ...

  3. Ammonium sulfate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_sulfate

    4 ions. For example, addition of barium chloride, precipitates out barium sulfate. The filtrate on evaporation yields ammonium chloride. Ammonium sulfate forms many double salts (ammonium metal sulfates) when its solution is mixed with equimolar solutions of metal sulfates and the solution is slowly evaporated.

  4. Double salt - Wikipedia

    en.wikipedia.org/wiki/Double_salt

    Mohr's salt, ammonium iron(II) sulfate, [NH 4] 2 [Fe(H 2 O) 6](SO 4) 2.. A double salt is a salt that contains two or more different cations or anions.Examples of double salts include alums (with the general formula M I M III (SO 4) 2 ·12H 2 O) and Tutton's salts (with the general formula (M I) 2 M II (SO 4) 2 ·6H 2 O). [1]

  5. Ammonium - Wikipedia

    en.wikipedia.org/wiki/Ammonium

    It is a positively charged molecular ion with the chemical formula NH + 4 or [NH 4] +. It is formed by the addition of a proton (a hydrogen nucleus) to ammonia ( NH 3 ). Ammonium is also a general name for positively charged (protonated) substituted amines and quaternary ammonium cations ( [NR 4 ] + ), where one or more hydrogen atoms are ...

  6. Tutton's salt - Wikipedia

    en.wikipedia.org/wiki/Tutton's_salt

    Sodium or lithium ions are too small. The divalent cation can be magnesium , vanadium , chromium , manganese , iron , cobalt , nickel , copper , zinc or cadmium . In addition to sulfate and selenate, the divalent anion can be chromate (CrO 4 2− ), tetrafluoroberyllate (BeF 4 2− ), hydrogenphosphate (HPO 4 2− ) [ 2 ] or monofluorophosphate ...

  7. List of aqueous ions by element - Wikipedia

    en.wikipedia.org/.../List_of_aqueous_ions_by_element

    In the present context the complex species have the general formula [M p O q (OH) r] n±. where p, q and r define the stoichiometry of the species and n± gives the electrical charge of the ion. The experimental data are fitted to those models which may represent the species that are formed in solution.

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  9. Ammonium iron(III) sulfate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_iron(III)_sulfate

    Ammonium iron(III) sulfate, NH 4 Fe(SO 4) 2 ·12 H 2 O, or NH 4 [Fe(H 2 O) 6](SO 4) 2 ·6 H 2 O, also known as ferric ammonium sulfate (FAS) or iron alum, is a double salt in the class of alums, which consists of compounds with the general formula AB(SO 4) 2 · 12 H 2 O. [2] It has the appearance of weakly violet, octahedrical crystals.