CHM 50
Quiz 3 – Chapter 4
Name
Show all set-up, calculation and report answers with correct significant figures.
1. Molarity is defined as
A. moles of solute per liter of solution
B. moles of solute per liter of solvent
C. moles of solvent per liter of solution
D. moles of solvent per liter of solvent
2.
When lead (II) nitrate reacts with sodium iodide, sodium nitrate and lead (II) iodide are formed. The balance
chemical equation is :
Pb(NO3)2 (aq) +
2NaI (aq) 
PbI2 (s) +
2NaNO3 (aq)
a)
If I start with 25.0 grams of lead (II) nitrate and 15.0 grams of sodium iodide, how many grams of sodium nitrate can
be formed?
b)
What is the limiting reagent?
f)
If 6.0 grams of sodium nitrate are formed in the reaction, what is the percent yield of this reaction?
3.
Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Ca(NO3)2
solution to 150.0 mL.
4. If I wanted make a solution by adding water to 35.0 mL methanol (CH3OH) until the final volume of the
solution is 275.0mL. Determine the molarity of the methanol solution.
Dang