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Molar mass: 194.189 g·mol −1 Appearance Yellow powder Odor: odorless Density: 2.7320 g/cm 3: ... Potassium chromate is the inorganic compound with the formula K 2 ...
The hydrogen chromate ion may be protonated, with the formation of molecular chromic acid, H 2 CrO 4, but the pK a for the equilibrium H 2 CrO 4 ⇌ HCrO − 4 + H + is not well characterized. Reported values vary between about −0.8 and 1.6. [4] The dichromate ion is a somewhat weaker base than the chromate ion: [5]
Molar mass: 294.185 g/mol Appearance red-orange crystalline solid ... it can be also obtained from potassium chromate by roasting chromite ore with potassium ...
Molar mass: 283.220 g/mol ... potassium sulfate is the potassium double sulfate of chromium. ... Chromium alum is produced from chromate salts or from ferrochromium ...
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 ).
Chromyl chloride can be prepared by the reaction of potassium chromate or potassium dichromate with hydrogen chloride in the presence of sulfuric acid, followed by distillation. [3] [4] K 2 Cr 2 O 7 + 6 HCl → 2 CrO 2 Cl 2 + 2 KCl + 3 H 2 O. The sulfuric acid serves as the dehydration agent.
With President-elect Donald Trump's recent announcement of former surgeon-turned-TV host Dr. Mehmet Oz to lead the Centers for Medicare and Medicaid Services (CMS), questions are swirling about ...
Molar mass: 161.97 g/mol ... Sodium chromate is the inorganic compound with the formula ... (even 350 C in the corresponding potassium chromate system). [2] ...