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Predominance diagram for chromate. In aqueous solution, chromate and dichromate anions exist in a chemical equilibrium.. 2 CrO 2− 4 + 2 H + ⇌ Cr 2 O 2− 7 + H 2 O. The predominance diagram shows that the position of the equilibrium depends on both pH and the analytical concentration of chromium.
IUPAC name. Potassium chromate. Other names Potassium dichromate, Chromic acid, (K2CrO4), dipotassium salt. Identifiers CAS Number. 7789-00-6 ...
Calcium chromate is an inorganic compound with the formula CaCrO 4, i.e. the chromate salt of calcium.It is a bright yellow solid which is normally found in the dihydrate form CaCrO 4 ·2H 2 O.
Ammonium chromate is a salt with the formula (NH 4) 2 CrO 4.It forms yellow, monoclinic crystals; made from ammonium hydroxide and ammonium dichromate; used in photography as a sensitizer for gelatin coatings.
Names IUPAC name. Sodium chromate. Other names Chromic acid, (Na 2 CrO 4), disodium salt Chromium disodium oxide Rachromate. Identifiers CAS Number. 7775-11-3 ...
Silver chromate is an inorganic compound with formula Ag 2 CrO 4 which appears as distinctively coloured brown-red crystals. The compound is insoluble and its precipitation is indicative of the reaction between soluble chromate and silver precursor salts (commonly potassium/sodium chromate with silver nitrate).
Names IUPAC name. iron(III) chromate. Identifiers CAS Number. 10294-52-7 ...
Strontium chromate is approximately 30 times more soluble in water at 100 °C than at room temperature. Therefore, the yellow strontium chromate can be suspended in a hot solution of a soluble sulfate to digest until fully converted to the much less soluble and white strontium sulfate, leaving the chromate or dichromate in solution.