Formative Review Quiz – B3&4
1)
a)
b)
c)
d)
Write the non-ionic, total ionic, and net ionic equation for the following reactions
sodium hydroxide and cobalt (II) chloride solutions are mixed
silver nitrate and calcium iodide solutions
hydrochloric acid an solid calcium hydroxide
aqueous solutions of strontium nitrate and aqueous sodium carbonate
2) Ammonia is produced by the following reaction 3H2(g) + N2(g) → 2NH3(g). In a laboratory 40.5g of
ammonia was produced from 360.00g of hydrogen and excess nitrogen.
a) What is the percent yield of this reaction?
b) How much ammonia would have been produced if the percent yield was 53.5%
3)
a)
b)
c)
For each of the following questions, report your answer in %(v/v), ppm, and mol/L
What is the concentration of NaCl(aq) when 2.2 g of the salt is dissolved in 550 mL of water?
What is the concentration of barium hydroxide when 65 mg is dissolved in 2.4 L of water?
What is the concentration of lithium metal when 1.67 g of Li(s) is dissolved in 28.6 L of water?
4) Determine the mass of lithium hydroxide produced when 0.38 g of lithium nitride reacts with 2.64 g of
water according to the following equation:
Li3N(s) + 3H2O(l)  NH3(g) + 3LiOH(aq)
5) How many grams of lead (II) nitrate are needed to fully react 23.5 mL of 0.55 M sodium chloride in the
precipitation of lead (II) chloride.
6) Use the information in the table below to answer the following questions.
Titration of 10.00 mL samples of HCl(aq) with 0.974 mol/L Ba(OH)2(aq)
Trial
1
2
3
4
Final burette reading (mL)
15.6
29.3
43.0
14.8
Initial burette reading (mL)
0.60
15.6
29.3
1.2
Blue
Green
Green
Green
Volume of Ba(OH)2(aq)
added
Color at endpoint
a)
b)
c)
d)
Find the concentration of HCl(aq).
Find the mass of HCl(aq) required to produce this concentration.
From this solution, make a 100.0 mL solution of 0.0950 mol/L (you have to do a calculation!!!).
Find the pH of the dilute solution of HCl(aq)
7) If a 20.0 mL solution of nitric acid is titrated with a 0.164 M solution of strontium hydroxide, use the
following table of results to:
Burette reading from the titration of 20.0 mL of nitric acid with strontium
hydroxide
Trial
Initial volume (mL)
Final volume (mL)
1
0.0
23.0
2
23.0
46.1
3
0.6
24.0
4
24.0
47.2
a) Calculate the average volume of strontium hydroxide added.
b) Calculate the concentration of the nitric acid.
c) Calculate the mass of nitiric acid that would be required to make a 150.0 mL solution with this
concentration (from part b)?
8) A student mixed 100.0 mL of a 0.100 mol/L solution of barium chloride with 100.0 mL of a 0.100 mol/L
solution of iron(III) sulfate.
a.
b.
Write balanced equation for the chemical reaction
What is the limiting reagent?
c.
d.
How many grams of each product will be produced?
What mass of the excess reagent be left over after the reaction is complete?