Saturated Solutions and Solubility

The solubility of barium hydroxide in water at 20 degrees Celsius is 1.85g/100g water. A solution is made up of 256 mg in 35.0 g of water at 20 degrees Celsius. Is the solution saturated?

Determination of an unsaturated, saturated, or supersaturated solution of barium hydroxide.
(35.0 g H2O)/1 x (1.85 g Ba(OH)2)/(100 g H2O) x (1000 mg Ba(OH)2)/(1 g Ba(OH)2) = 648 mg Ba(OH)2 dissolved in 35.0 g H2O to make a saturated solution.

Since only 256 mg Ba(OH)2 is dissolved in 35.0 g H2O, the solution is unsaturated.

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