Today, we calculated the volume of acid needed to dissolve given masses of Mg(OH)2(s) and CaF2(s). The problems are listed below. Be sure that you are comfortable with the steps involved in solving them.
1. Ten (10.0) grams of Mg(OH)2(s) is combined with distilled water to yield a volume of 50.0ml of solution. What volume of 3.00M HCl must be added to dissolve all of the
Mg(OH)2(s)?
2. Twelve (12.0) grams of CaF2(s) is combined with distilled water to yield a volume of 60.0ml of solution. What volume of 2.00M HCl must be added to dissolve all of the CaF2(s)?
We will have a quiz on solubility equilibrium on Thursday. You should be able to:
1. Given a list of Ksp values, order substances from least to most soluble.
2. Calculate solubility (g/L) from Ksp.
3. Predict the effect of acid on solubility.
4. Calculate the volume of acid needed to completely dissolve a given mass of solid (assuming that lowering the pH will increase solubility).
5. Predict the effect of a common ion on solubility.
6. Calculate the effect of a common ion on solubility.
