1. Review solubility curves, Henry’s Law, and percent concentration

2. 1.Which salt is least soluble in water at 50C°? a.KI b.KNO 3 c.NaNO 3 d.KClO 3 e.NH 3

3. 2. Which salt is most soluble in water at 20C°? a.KI b.KNO 3 c.NaNO 3 d.KClO 3 e.NH 3

4. 3. When 50 grams of KNO 3 is dissolved in water at 60°C, what type of solution is formed? a.unsaturated b.saturated c.supersaturated

5. 4. When 50 grams of NH 4 Cl is dissolved in water at 50°C, what type of solution is formed? a.unsaturated b.saturated c.supersaturated

6. 4. If a saturated solution of NH 4 Cl is cooled from 50°C to 10°C, what type of solution is formed? a.unsaturated b.saturated c.supersaturated

7. 5. At what temperature will 60 g of NH 4 Cl for a saturated solution? a. 40°C b. 50°C c. 60°C d. 70°C

8. 6. At what temperature will 80 g of NaNO 3 for a saturated solution? a. 145°C b. 70°C c. 50°C d. 30°C e. 10°C

9. 7. If a saturated solution of KCl is cooled from 80 °C to 10°C how much precipitate will be formed? a. 30 grams b. 20 grams c. 10 grams

10. 8. If a saturated solution of KNO 3 is cooled from 70 °C to 40°C how much precipitate will be formed? a. 130 grams b. 110 grams c.70 grams d. 30 grams

11. 9. If a saturated solution of KNO 3 is cooled from 50 °C to 40°C how much precipitate will be formed? a.80 grams b. 60 grams c. 20 grams d.10 grams

12. 10. How many grams of NaNO 3 would be required for a saturated solution in 200 grams of water at 10°C? a. 40 grams b. 80 grams c. 100 grams d. 160 grams

13. 11. How many grams of KCl would be required for a saturated solution in 300 grams of water at 80°C? a. 16 grams b. 50 grams c. 150 grams d. 600 grams

14. 12. A gas at 0.5 atm and 30°C has a solubility of 10 g per 1 L. What would be the solubility at 4 atm? a. 0.2 g/L b. 0.5 g/L c. 1.25 g/L d. 75 g/L e. 80 g/L

15. 13. NaCl has a solubility of 3.75 g/L at 20 atm. What pressure would be need to have a solubility of 5 g/L at 25°C? a. 0.94 atm b. 1.67 atm c.15 atm d.26.7 atm

16. 14. A gas at 4 atm has a solubility of 14.2 g/L. What would be the solubility at 6 atm? a. 1.7 g/L b. 9.5 g/L c. 21.3 g/L

17. 15. What is the solution concentration that is made from 100 grams of NaCl with 200 grams of water? a. 50 % b. 33 % c. 20 % d. 0.50 % e. 0.33 %

18. 16. What is the solution concentration of a 2000 mL solution made with 475 grams of salt? a. 0.19 % b. 19 % c. 0.24 % d. 23.75%

19. 17. Sam poured out 300 mL of a bottle of solution labeled 25%. How much solute was poured out? a. 1200 mL b. 75 mL c. 8 mL d. 7.7 mL

20. 18. A bottle of solution was labeled 15%. If 875 grams of solution was poured out, how much solute was poured out? a. 58. 33 g b. 131.25 g c. 5,833 g d. 13,125 g