A chemist dissolved crystals of an unknown substance into water at room temperature. He found that 33 g of the substance can be dissolved into 100 mL of water. What property of the unknown substance was the chemist most likely investigating?

Md Ariful Islam

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The solubility of a substance is a measure of how much can dissolve in a certain at a given temperature, and is usually expressed in units of grams of solute per $100$ $"mL"$ of solvent or, probably more often, grams of solute per liter of solvent.

When the chemist found that $33$ $"g"$ of an unknown solute had dissolved in $100$ $"mL"$ of water, he was therefore most likely trying to determine that substance's solubility in water.

The solubilities of substances are specific to each individual solute. That is, in general, no two substances have exactly the same solubility in water at any given temperature. Thus, measuring the water solubility of a substance can also help to identify that substance.

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