1 mole Na 1 mole Cl 1 Eq 1 mole Ca 2 2 Eq 1 mole Al 3 3 Eq 93 Solubility

1 mole na 1 mole cl 1 eq 1 mole ca 2 2 eq 1 mole al 3

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1 mole Na + = 1 mole Cl - =1 Eq; 1 mole Ca 2+ = 2 Eq; 1 mole Al 3+ = 3 Eq 9.3 Solubility Solubility is the maximum ratio of the amount of solute dissolved in 100 g of solvent at a given temperature. Solubility is often expressed as the ratio of grams of solute and 100 g of H 2 O , along with the temperature. At a certain temperature, a saturated solution contains the maximum amount of the dissolved solute. In the solution, the ratio of the amounts of solute and solvent is equal or greater than the solubility. If a solute readily dissolves in the solvent, the solution is unsaturated . Supersaturated solution contains more than the amount of solute that can be dissolved. Supersaturated solutions are not stable. Over time, or with a slight agitation the extra dissolved solute can crystalize out of the solution rapidly. An increase in temperature increases the solubility of most solids; but decreases the solubility of gases in water. Solubility of covalent compounds can be predicted by their polarities: like dissolves like .
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