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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: Ca(OH) 2 → Ca 2+ + 2 OH −. The solubility is affected by the common-ion effect. Its ...
When the hydrolysis of calcium sulfide is accounted for, the individual reactions for each of the by-products are: 1 / 2 S 8 + H 2 O + 2 Ca(OH) 2 → 2 H 2 S + CaS 2 O 3 3 / 8 S 8 + H 2 O + 2 Ca(OH) 2 → 2 H 2 S + CaSO 3 1 / 2 S 8 + 2 H 2 O + 2 Ca(OH) 2 → 3 H 2 S + CaSO 4. However, elemental sulfur can undergo a disproportionation reaction ...
In chemistry, a strong electrolyte is a solute that completely, or almost completely, ionizes or dissociates in a solution. These ions are good conductors of electric current in the solution. Originally, a "strong electrolyte" was defined as a chemical compound that, when in aqueous solution , is a good conductor of electricity.
A typical mixture is 3 parts of concentrated sulfuric acid and 1 part of 30 wt. % hydrogen peroxide solution; [1] other protocols may use a 4:1 or even 7:1 mixture. A closely related mixture, sometimes called "base piranha", is a 5:1:1 mixture of water, ammonia solution (NH 4 OH, or NH 3 (aq)), and 30% hydrogen peroxide.
In that process sodium sulfide reacts with calcium carbonate: [1] Na 2 S + CaCO 3 → CaS + Na 2 CO 3. Millions of tons of this calcium sulfide byproduct was discarded, causing extensive pollution and controversy. [2] Milk of lime, Ca(OH) 2, reacts with elemental sulfur to give a "lime-sulfur", which has been used as an insecticide.
In chemical terms, the pozzolanic reaction occurs between calcium hydroxide, also known as portlandite (Ca(OH) 2), and silicic acid (written as H 4 SiO 4, or Si(OH) 4, in the geochemical notation): Ca(OH) 2 + H 4 SiO 4 → CaH 2 SiO 4 ·2 H 2 O. or summarized in abbreviated cement chemist notation: CH + SH → C-S-H. The pozzolanic reaction can ...
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.The reactant entities are given on the left-hand side and the product entities are on the right-hand side with a plus sign between the entities in both the reactants and the products, and an arrow that points towards the products to show the direction of the reaction. [1]
Ultimately, Ca 2+ ions in equilibrium with portlandite (Ca(OH) 2) and C-S-H and dissolved in the concrete interstitial water can also react with SO 2− 4 ions to precipitate CaSO 4 ·2H 2 O . A fraction of SO 2− 4 ions can also be trapped, or sorbed, into the layered structure of C-S-H. [3] These successive reactions lead to the ...