Ionic compounds have widely differing solubilities. Salts of alkali metals tend to be quite soluble. On the other end of the spectrum, the solubility of zinc hydroxide is only 4. Many ionic compounds containing hydroxide are relatively insoluble.
Most ionic compounds that are considered to be insoluble will still dissolve to a small extent in water. As an example, silver chloride dissociates to a small extent into silver ions and chloride ions upon being added to water.
The process is written as an equilibrium because the dissociation occurs only to a small extent. Therefore, an equilibrium expression can be written for the process. Keep in mind that the solid silver chloride does not have a variable concentration and so is not included in the expression. Our new student and parent forum, at ExpertHub.
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In these equations, they are also referred to as "products". So [AgCl] represents the molar concentration of AgCl. First, write out the K sp expression, then substitute in concentrations and solve for K sp :.
What is the solubility product for Mg OH 2? Calculate the molar solubility of copper bromide. Solubility is defined as the maximum amount of solute that can be dissolved in a solvent at equilibrium. Equilibrium is the state at which the concentrations of products and reactant are constant after the reaction has taken place. The value of the constant identifies the degree to which the compound can dissociate in water.
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