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Chromium compounds are compounds containing the element chromium (Cr). Chromium is a member of group 6 of the transition metals . The +3 and +6 states occur most commonly within chromium compounds, followed by +2; charges of +1, +4 and +5 for chromium are rare, but do nevertheless occasionally exist.
Copper is a chemical element with the symbol Cu (from Latin: cuprum) and the atomic number of 29. It is easily recognisable, due to its distinct red-orange color.Copper also has a range of different organic and inorganic salts, having varying oxidation states ranging from (0,I) to (III).
Cu + 4 HNO 3 → Cu(NO 3) 2 + 2 H 2 O + 2 NO 2. The same salts can be prepared treating copper metal with an aqueous solution of silver nitrate. That reaction illustrates the ability of copper metal to reduce silver ions. In aqueous solution, the hydrates exist as the aqua complex [Cu(H 2 O) 6] 2+.
C 4 H 7 NO 2: 1-Aminocyclopropanecarboxylic acid: 22059-21-8 C 4 H 7 NO 3: aceturic acid: C 4 H 7 NO 4: aspartic acid Asp: 56-84-8 C 4 H 8: cyclobutane: 287-23-0 C 4 H 8 N 2 O 3: asparagine Asn: 70-47-3 C 4 H 8 O: tetrahydrofuran THF: 109-99-9 C 4 H 8 O 2: ethyl acetate: C 4 H 8 O 3: gamma-Hydroxybutyric acid: 591-81-1 C 4 H 9 ClHg n ...
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Chromium(II) chloride describes inorganic compounds with the formula Cr Cl 2 (H 2 O) n. The anhydrous solid is white when pure, however commercial samples are often grey or green; it is hygroscopic and readily dissolves in water to give bright blue air-sensitive solutions of the tetrahydrate Cr(H 2 O) 4 Cl 2 .
Cu 2 C 2: copper(I) acetylide: 1117–94–8 Cu 2 Fe(CN) 6: copper(II) ferrocyanide: 13601–13–3 Cu 2 O: copper(I) oxide: 1317–39–1 Cu 2 P 2 O 7: copper(II) pyrophosphate: 10102–90–6 Cu 2 S: copper(I) sulfide: 22205–45–4 Cu 2 Se: copper(I) selenide: 20405–64–5 Cu 2 Te: copper(I) telluride: 12019–52–2 Cu 3 (AsO 4) 2 ...