Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryIonic Equilibria2 Marks
Question
Define solubility. How is it expressed ?
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Answer
Solubility : It is defined as the maximum amount of a substance in moles, that can be dissolved at constant temperature to give one litre of its saturated solution. It is expressed in moles per litre or moles per decimeter cube of a saturated solution at given temperature. $\begin{aligned} & \therefore \text { Molar solubility } \\ & =\frac{\text { Solubility in number moles of substance }}{\text { Volume of a solution in } dm ^{-3}} \\ & =\frac{\text { Solubility in gram per } dm ^{-3}}{\text { Molecular mass of the substance }} \end{aligned}$
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