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Hydrated chromium(III) sulfate, Cr 2 (SO 4) 3 ·18H 2 O, (CAS #13520-66-6) is a violet solid that readily dissolves in water to give the metal aquo complex, [Cr(H 2 O) 6] 3+. The formula of this compound can be written more descriptively as [Cr(H 2 O) 6 ] 2 (SO 4 ) 3 ·6H 2 O. Six of the eighteen water molecules in this formula unit are water ...
−1 +3 +5 11 [134] 112 copernicium: Cn +2 +4 12 [134] 113 nihonium: Nh 13 114 ... The oxidation states are also maintained in articles of the elements ...
A large number of chromium(III) compounds are known, such as chromium(III) nitrate, chromium(III) acetate, and chromium(III) oxide. [8] Chromium(III) can be obtained by dissolving elemental chromium in acids like hydrochloric acid or sulfuric acid , but it can also be formed through the reduction of chromium(VI) by cytochrome c7 . [ 9 ]
[1] The salt is produced by treating chromium metal with aqueous sulfuric acid: [2] Cr + H 2 SO 4 + 5 H 2 O → CrSO 4 ·5H 2 O + H 2. It can be produced through the reaction of sulfate salts and chromium(II) acetate [3] or, for in situ use, the reduction of chromium(III) sulfate with zinc. [1]
3 c 2 h 5 oh + 2 k 2 cr 2 o 7 + 8 h 2 so 4 → 3 ch 3 cooh + 2 cr 2 (so 4) 3 + 2 k 2 so 4 + 11 h 2 o The excess dichromate is determined by titration against sodium thiosulfate . Adding the amount of excess dichromate from the initial amount, gives the amount of ethanol present.
One cup of low-fat milk has 8 grams of protein and 100 calories, while Greek yogurt provides 15 grams of protein in a small 5.3-ounce container. As for cottage cheese, half a cup has about 12 ...
January 3, 2025 at 6:52 PM Rags, a two and a half year old deaf Old English Sheepdog, was stolen from his home in Silverhill, Alabama on Dec. 9, 2023, by a masked intruder during a residential ...
4Fe + 3O 2 → 4Fe 3+ + 6O 2− → 2Fe 2 O 3. In the above equation, the Iron (Fe) has an oxidation number of 0 before and 3+ after the reaction. For oxygen (O) the oxidation number began as 0 and decreased to 2−. These changes can be viewed as two "half-reactions" that occur concurrently: Oxidation half reaction: Fe 0 → Fe 3+ + 3e −