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Calcium bromide is the name for compounds with the chemical formula Ca Br 2 (H 2 O) x. Individual compounds include the anhydrous material (x = 0), the hexahydrate (x = 6), and the rare dihydrate (x = 2). All are white powders that dissolve in water, and from these solutions crystallizes the hexahydrate.
C 3 H 7 CH(CH 3)C 2 H 4 COOH 5-methylheptanoic acid C 2 H 5 CH(CH 3)C 3 H 6 COOH 6-methylheptanoic acid (CH 3) 2 CHC 4 H 8 COOH 2,2-dimethylhexanoic acid C 4 H 9 C(CH ...
HCO 2 H → H 2 O + CO. Treatment of formic acid with sulfuric acid is a convenient laboratory source of CO. [15] [16] In the presence of platinum, it decomposes with a release of hydrogen and carbon dioxide. HCO 2 H → H 2 + CO 2. Soluble ruthenium catalysts are also effective for producing carbon monoxide-free hydrogen. [17]
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
LaC 2 reacts with water to form acetylene, C 2 H 2 and a mixture of complex hydrocarbons. [3] LaC 2 is a metallic conductor, in contrast to CaC 2 which is an insulator. [3] The crystal structure of LaC 2 shows that it contains C 2 units with a C-C bond length of 130.3 pm, which is longer than the C-C bond length in calcium carbide, 119.2 pm, which is close to that of ethyne. [3]
C 6 A S 3 H 32, sometimes with substitution of Fe for Al, and/or CO 2− 3 for SO 2− 4: Calcium trisulfoaluminate hydrate, or ettringite: AFm: C 4 A S H 12, often with substitution of Fe for Al, and/or various other anions such as OH − or CO 2− 3 for SO 2− 4: Calcium monosulfoaluminate C 3 AH 6: 3CaO · Al 2 O 3 · 6 H 2 O: Hydrogarnet
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2 La + 3 S → La 2 S 3. It can also be prepared from the effect of hydrogen sulfide on lanthanum: 2 La + 3H 2 S → La 2 S 3 + 3 H 2. The effect of hydrogen sulfide on lanthanum oxide in the presence of reducing agents also produces lanthanum(III) sulfide: La 2 O 3 + 3 H 2 S + 3 C → La 2 S 3 + 3 CO 2 + 3 H 2