Chemistry Problem Set: D7
Review of Limiting Reactants/Reagents
Block: ____ Name: ________________
For the quiz on Thursday, turn in PS D2 – D7. Staple them together in sequential order (D2 first). Plus turn in your lab book as I
will be checking your write up of the limiting reaction lab (make sure you recorded your data and answered the questions).
Items to review for the quiz:
1. Naming (Chp. 9)
a. Be able to name a simple compound from its formula.
b. Be able to derive a compound’s formula from its name.
c. It never hurts to know your polyatomic ions. See Table 9.3 on page 257 of the text.
d. If you want a refresher, there’s a pencast on this material. Questions will be similar to the D2 Quiz and to the
chemical names on the problem sets.
2. Reaction balancing
a. Be able to balance chemical reactions.
3. Stoichiometry (Chp. 12)
a. Be able to compute the amount (in either grams or moles) of products produced and/or reactants used in a
balanced reaction.
b. Be able to determine whether a reactant is limiting or excess and determine the amount of resulting product.
c. Be able to compute theoretical yield, actual yield, and percent yield of a reaction.
1) Name the following: (2 columns)
a) NO2
____________________
d) Sn(CO3)2 ____________________
b) Pb(OH)2 ____________________
e)
CCl4
____________________
c)
f)
BaS
____________________
NH4NO3 ____________________
2) Write formulas for the following:
a) Calcium sulfite _____________________
d) Cobalt (II) hydroxide __________________
b) Boron trichloride ____________________
e)
Magnesium phosphate ________________
c)
f)
Sodium sulfate
Sodium nitride
_____________________
_____________________
3) Copper metal reacts with silver nitrate to form copper (II) nitrate and silver metal.
a) Write the balanced chemical reaction.
b) Suppose you had 3.1 mol of silver nitrate reacting with 181 g of copper.
i)
What is the limiting reagent?
ii)
What mass (in grams) of the excess reagent remains after the reaction has completed?
iii) How many grams of silver metal are produced?
4) Aluminum hydroxide reacts with sulfuric acid (H2SO4) to form aluminum sulfate and water.
a) Write the balanced chemical reaction.
b) Suppose you had 30 g of sulfuric acid and 25 g of aluminum hydroxide.
i)
What is the limiting reagent?
ii)
What mass of aluminum sulfate is produced?
iii) What mass (in grams) of the excess reagent remains after the reaction has completed?
5) Iron (II) chloride reacts with sodium phosphate to yield iron (II) phosphate and sodium chloride.
a) Write the balanced chemical reaction.
b) Suppose you had 646.44 g of iron (II) chloride and 5.1 mol of sodium phosphate.
i)
What is the limiting reagent?
ii)
How many grams of iron (II) phosphate will be produced?
iii) What mass (in grams) of the excess reagent remains after the reaction has completed?
Answers (IRO+1) :
34.91 278.68 82.49 607.75 334.39 9.09 836.09