Solutions

1
Chapter 7

• Solutions

2
Question

• Why is 24K gold softer and more yellow than 10K
  or 18K?
• Why cant planes be made with Mg metal?

3
Other solutions

• Do fillings leak?
• Why add He to scuba tanks?

4
Terms

• Solute
• Solvent
• Miscible
• Suspension
• Solvation
• Hydration

5
Nine Solutions

6
Why does NaCl dissolve in water?

7
Why does Sugar dissolve in water?

8
Solubility

• Saturated
• Unsaturated
• Supersaturated
• Rules p. 177

9
Concentration

• Generally

10
Concentration

• Composition
• Molarity

11
w/w - preparation

• Convert to 100. g
• How would you prepare 200. g of a 5.50 w/w
  solution of sugar?

12
w/w - mass

• How many grams of phenol are in 2.5 g of a 0.20
  w/w solution?

13
w/w volume

• How many grams of 6.30 w/w solution of CaCl2 are
  needed to obtain 27.6 g of CaCl2?