1. Please get a text book and read pages 450 through 454.
Entrance Ticket 2/25/15
Please get a text book and read pages 450 through 454.
1.) Describe what a solution is (use words like: solute, solvent, and homogeneous)
2.) Describe what dissolving is… (at the molecular level)
3.) What is an aqueous solution (aq)?
Homework: #3-6

2. Please have out: Homework: 16.1 #3-6
Do you have any questions from the homework?

3. What’s this?!

4. -Read 15.1 and use the text to help you with the study guide.
Water!
Water is a unique substance that has extreme importance. We have looked at water before, but we need to review, refresh and explore deeper!
-Read 15.1 and use the text to help you with the study guide.

5. You need a text book today!
Entrance Ticket 2/27/15
You need a text book today!
1.) What are some factors that affect solubility?
2.) What does it mean when a solution is saturated?
3.) What is an electrolyte?
Homework: Add 16.2 #16-20, 23 to your 16.1 homework

6. Entrance Ticket 3/2/15
1.) What is the molarity (M) of a solution of NaOH (aq) that has a volume of 3.4 L and has 85 g of NaOH dissolved?
(the molar mass of NaOH is 40 g/mol)
2.) What mass of HCl is needed to create 6.7 liters of a 0.50 M solution?

7. Entrance Ticket 3/3/15
1.) How many moles of HCl would need to be dissolved into a 1.2 L solution to make it 3.0 M?
2.) How many grams of HCl would this be?

8. Entrance Ticket 3/4/15
1.) What is the molarity (M) of a solution of NaOH (aq) that has a volume of 2.75 L and has 3.0 moles of NaOH dissolved?
2.) If you have 365 mL of acetone solution that is 5%, how much acetone is in it?

9. Entrance Ticket 3/4/15
1.) M = 3.0 mol / 2.75 L
M = 1.1 mol/L
2.) 365 mL x .05 =
18 mL acetone

10. Entrance Ticket Cont…
3.) If you have 250 mL of a 12% HCl solution, what is the volume of the HCl that is dissolved?
4.) Name three factors that can affect solubility.
5.) What is the volume in liters of a 3.0 molar solution that has 18 moles of solute dissolved?

11. Entrance Ticket Cont… 3.) 250 mL x .12 = 30 mL HCl
4.) Solubility is affected by: temperature, agitation, pressure, surface area
5.)3.0 mol/L = 18 mol / x
x = 18 mol / 3.0 mol/L
x = 6 L

12. Ice Cream Pre-lab 1) What is boiling point elevation?
Why does it happen?
2) What is freezing point depression?
3) What do both of these concepts have in common?