Reaction Stoichiometry Chem 10 Review Worksheet
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3Reaction Stoichiometry CHEM 10 Review Worksheet
The problems on this worksheet are Chem 10 level problems. They are provided to assist your review of some topics
covered in Chp 3 of the Zumdahl textbook. Note that Chem 11 problems will be more involved and more rigorous than
these! An answer key is provided at the end of this worksheet.
Reaction Stoichiometry
1. Iron metal is produced from the mineral hematite (Fe
O
) and pure carbon, as given by the equation:
2
3
__Fe
O
(s) + __C (s) → __Fe (s) + __CO
(g)
[unbalanced]
2
3
2
Balance this equation. Then, use the mole ratios therein to perform the calculations below.
a. How many moles of C are required to completely react with 14.251 moles of Fe
O
(hematite)?
2
3
b. How many moles of Fe
O
must react to generate 0.986 moles of pure iron?
2
3
c. How many moles of CO
will be generated if 2.774 moles of carbon completely reacts?
2
2. When nitroglycerin explodes, the following reaction occurs:
4 C
H
(ONO
)
(l) → 12 CO
(g) + 10 H
O (l) + 6 N
(g) + O
(g)
3
5
2
3
2
2
2
2
If 0.398 moles of nitroglycerine explodes, how many moles of each product would be formed?
3. The element phosphorus naturally occurs as P
(s). It reacts readily with magnesium according to the
4
following equation:
__Mg (s) + __P
(s) → __Mg
P
(s)
[unbalanced]
4
3
2
What mass (in g) of P
is required to completely react with 73.4 grams of Mg?
4
4. Ammonia reacts with oxygen according to the following equation:
__NH
(g) + __O
(g) → __NO
(g) + __H
O (g)
[unbalanced]
3
2
2
2
How many molecules of water will be generated by the complete reaction of 191.4 grams of ammonia?
5. Carbon tetrachloride may be produced via the reaction between methane and chlorine gases:
__CH
(g) + __Cl
(g) → __CCl
(l) + __HCl (g)
[unbalanced]
4
2
4
If this reaction generates 2.50 gallons of CCl
, how many pounds (lbs) of HCl were also generated? The
4
density of CCl
is 1.5867 g/mL.
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