Determine the Mass of a Solute Needed to Prepare a Saturated Solution and its Solubility in 250 mL of Water

You are given 250 mL of water at 25 o C and need to add enough calcium hydroxide ( Ca(OH) 2 ) to make a saturated solution.  If the solubil...

You are given 250 mL of water at 25 oC and need to add enough calcium hydroxide (Ca(OH)2) to make a saturated solution.  If the solubility of Ca(OH)2 in water at 25 oC is 0.12 g / 100 mL.

a) What is the mass of Ca(OH)2 needed to prepare a saturated solution in 250 mL of water?
b) What is the solubility of Ca(OH)2 in 250 mL of water?

Solution
1) identify and equals the relationships
2) solve by X