To dissolve 25 g of KCl at 30. °C the minimum mass of water required is 82 g.
What is solubility?
Solubility refers to the maximum amount of a solute that can be dissolved in 100 g of solvent.
We have the following information:
- We want to dissolve 25 g of KCl (solute). This is the given information.
- We want to calculate the mass of water (solvent) required. This is the required information.
- The solubility of KCl at 30. °C is 30.4 g KCl per 100 g of water. This is the conversion factor.
25 g KCl × 100 g Water/30.4 g KCl = 82 g of Water
To dissolve 25 g of KCl at 30. °C the minimum mass of water required is 82 g.
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