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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.
Carbonatation is a slow process that occurs in concrete where lime (CaO, or Ca(OH) 2 ) in the cement reacts with carbon dioxide (CO 2) from the air and forms calcium carbonate. The water in the pores of Portland cement concrete is normally alkaline with a pH in the range of 12.5 to 13.5.
The alkali–carbonate reaction is an alteration process first suspected in the 1950s in Canada for the degradation of concrete containing dolomite aggregates. [1] [2]Alkali from the cement might react with the dolomite crystals present in the aggregate inducing the production of brucite, (MgOH) 2, and calcite (CaCO 3).
Calcium hydroxide is modestly soluble in water, as seen for many dihydroxides. Its solubility increases from 0.66 g/L at 100 °C to 1.89 g/L at 0 °C. [8] Its solubility product K sp of 5.02 × 10 −6 at 25 °C, [1] its dissociation in water is large enough that its solutions are basic according to the following dissolution reaction:
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
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Magnesium fluorophosphate – MgPO 3 F; Magnesium gluconate – Mg(HOCH 2 (CHOH) 4 CO 2) 2; Magnesium hydride – MgH 2; Dimagnesium phosphate – MgHPO 4; Magnesium hydroxide – Mg(OH) 2; Magnesium hypochlorite – Mg(OCl) 2; Magnesium iodide – MgI 2; Magnesium molybdate – MgMoO 4; Magnesium nitrate – Mg(NO 3) 2; Magnesium oxalate ...
1 / 10. AI d-Matrix. Employees work behind an evaluation board, foreground, in a lab at the d-Matrix office in Santa Clara, Calif., Wednesday, Oct. 16, 2024. (AP Photo/Jeff Chiu)