How would you figure out the solubility of an unknown solid in water?
Solubility is in grams per liter (or pounds per gallon, or whatever units). One experimental method is to start with a carefully measured amount of water (your solvent in this case) and add carefully measured amounts of the unknown solid (the solute) and stir often until it doesn’t dissolve anymore and some of it stays in chunks (or crystals or powder) either on the top or bottom of the water (which will also tell you whether its specific gravity is greater or less than water). The number of grams you used before it stopped dissolving is the numerator of the fraction, the measured volume of water you put it in is the denominator. The reduced fraction is its solubility. More info in the link below.
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