Quiz 2
Activity Sheet Ch 8 (20 pts)
Chemistry 121 – Dr. Price
Name _____________
M1V1=M2V2
1. (2 points) Name the solute(s) and solvent in the following solutions:
Solvent(s)
Solute(s)
a. Ai
. Lemonade
2. (4 point) Draw a picture and describe in detail how and why to the heights of two solutions separated by a semi permeable mem
ane will change, where the right side has a 1.0 M sugar and the left side has 1.0 M saline (NaCl) solution. Which side is exerting higher osmotic pressure?
3. (4 points) Why and how does dissolving a non-volatile solute, such as NaCl, into water affect the freezing point and boiling point? Describe how and why.
4. (4 points) A saline solution used in an intravenous drip is 0.920% (w/v) NaCl in water. How many grams of NaCl are contained in 550.0 mL of the solution?
5. (4 points) In complete sentences with co
ect numbers and laboratory tools (volumetric flask, graduated cylinder, etc), describe the steps to prepare XXXXXXXXXXmL of 2.00 M H2SO4 from a concentrated 5.00 M H2SO4 solution.
6. (1 point) Balance the following reaction:
____CaCO3(s) + ____HCl(aq) → ____H2O(l) +____CO2(g) + ____CaCl2(aq)
7. (3 points) Stomach acid is essentially 0.100 M HCl. An active ingredient found in antacids such as Alka Seltzer is calcium ca
onate, CaCO3. Calculate the grams of CaCO3 needed to react exactly with 80.0 mL of stomach acid. (Hint: use your balanced equation above).