alleryStart learning →Molar solubility is preferred for solubility calculations because it expresses dissolved solute in:
AGrams per gram
BLitres per mole
CPercent by mass
DMoles per litre
Answer & Solution
Correct answer: D. Moles per litre
1. Equilibrium expressions are written in terms of concentration.
2. Solubility product expressions use ion concentrations.
3. Calculations of this sort are most conveniently performed using molar solubility.
4. Molar solubility is measured as moles of dissolved solute per liter of saturated solution.
5. That matches the units the equilibrium constant needs.
_Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 15 'Equilibria of Other Reaction Classes', sections 15.1-15.3_
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