Conceptual Qs
True or false: Solutions are homogenous mixtures.
True
What is the formula for molarity?
Mol of solute / L of solution
Which of the following is/are true?
a) Strontium sulfate is insoluble
b) Barium sulfide is insoluble
c) Barium carbonate is insoluble
d) Magnesium phosphate is soluble
e) Lead (II) acetate is insoluble
a and c
True or false: The solvent is the minor component of the solution while the solute is the major component of the solution.
False!
0.3216 M
Complete the reaction and produce the net ionic equation:
CoCl2 + Na2SO4 -->
NO PRECIPITATION REACTION BECAUSE NO PRECIPITATE IS FORMED!!!!!!!!!!!!!!!!!!!!!!
REVIEW: Give the percent yield equation.
Actual / theoretical x 100
What is the concentration of chloride ions in a solution made from 25 grams of calcium chloride and enough water to make 100 mL of solution?
4.5 M
What is the net ionic equation when potassium sulfate and silver nitrate are mixed?
SO42- (aq) + 2 Ag+ (aq) --> Ag2SO4 (s)
When you have a problem with the words "stock solution" , what equation should you use?
M1V1 = M2V2
What volume in mL of 0.150 M Na3PO4 is needed to completely react with 22.5 mL of 0.240 M NiCl2?
2 Na3PO4 + 3 NiCl2 --> Ni3(PO4)2 + 6 NaCl
24 mL
A 15.0 mL sample of 0.200 M Na3PO4 is combined with 125 mL of 0.0600 M AgNO3. The precipitate is collected and dried and found to have an actual mass of 0.942 g. Calculate the percent yield.
90%
True or false: Net ionic equations contain only the precipitate and the ions that form it.
TRUE
What volume (in mL) of 0.750 M Fe(NO3)3 stock solution is needed to create 150.0 mL with an iron concentration of 0.250 M NO3-?
16.7 mL
What is the net ionic equation when potassium sulfate and calcium chloride are mixed?
SO42- (aq) + Ca2+ (aq) --> CaSO4 (s)