Stoichiometry Unit Review Sheet Name
Stoichiometry Unit Review Sheet Name
Stoichiometry Unit Review Sheet Name
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<strong>Stoichiometry</strong> <strong>Unit</strong> <strong>Review</strong> <strong>Sheet</strong><br />
<strong>Name</strong> _______________________<br />
Be able to<br />
Balance equations<br />
Calculate the molar mass/molecular weight/formula mass of a substance<br />
Predict products of an ionic reaction and write a balanced net ionic equation<br />
Do mass-mass (and other) stoichiometry problems<br />
Do limiting reagent problems<br />
Do percent composition problems, including combustion analysis problems<br />
Calculate percent yield for a reaction.<br />
Predict products of a reaction based on the reaction type.<br />
Balancing equations:<br />
1. _____FeTiO 3(s) + _____Cl 2(g) + _____C (s) _____FeCl 2(s) + _____TiO 2(s) + _____CO 2(g)<br />
2. _____CH 3 CH 2 CHO (l) + _____O 2(g) _____H 2 O (g) + _____CO 2(g)<br />
3. _____Al 4 C 3 + _____H 2 O _____Al(OH) 3 + _____CH 4<br />
Classify the equations above as single displacement, double displacement, synthesis, decomposition or<br />
combustion.<br />
Predicting Products: Write balanced equations for the following reactions:<br />
1. The synthesis of lithium nitride from its elements.<br />
2. A double displacement reactions between aluminum hydroxide and nitric acid.<br />
3. The combustion of hexane (C 6 H 14 ).<br />
<strong>Stoichiometry</strong> Problems:<br />
1. Determine the number of liters of oxygen gas (at STP) required to react completely with 3.86 liters of hydrogen<br />
gas by the following reaction:<br />
H 2(g) + O 2(g) H 2 O (g)<br />
2. A double replacement reaction between barium chloride and sodium carbonate produces a white solid that does<br />
not dissolve in water. How many grams of this barium carbonate are produced by the complete reaction of<br />
197.45 g of barium chloride<br />
Limiting Reagent Problems:<br />
1. How many grams of zinc chloride are produced when 5.57 g of zinc is added to 1.53 g of HCl<br />
2. Using the same reaction as above, what volume of hydrogen gas is produced if 14.3 g of Zn is added to<br />
36.5 g of HCl<br />
Percent Yield:<br />
1. You do the reaction from question 1 above (“<strong>Stoichiometry</strong> Problems”) and you isolate 1.78g of ZnCl 2 .<br />
What is your percent yield<br />
2. You do the reaction from question 2 above (“<strong>Stoichiometry</strong> Problems”) and you isolate 4.42 L of H 2 . What<br />
is your percent yield
<strong>Stoichiometry</strong> <strong>Unit</strong> <strong>Review</strong> <strong>Sheet</strong><br />
<strong>Name</strong> _______________________<br />
Balancing equations:<br />
1. ___2__FeTiO 3(s) + __2___Cl 2(g) + _____C (s) ___2__FeCl 2(s) + __2___TiO 2(s) + _____CO 2(g)<br />
2. ___2__CH 3 CH 2 CHO (l) + ___9__O 2(g) ___6__H 2 O (g) + __6___CO 2(g)<br />
4. _____Al 4 C 3 + ___12__H 2 O __4___Al(OH) 3 + __3___CH 4<br />
Classify the equations above as single displacement, double displacement, synthesis, decomposition or<br />
combustion.<br />
Predicting Products: Write balanced equations for the following reactions:<br />
1. The synthesis of lithium nitride from its elements.<br />
6 Li + 3 N 2 2 Li 3 N<br />
2. A double displacement reactions between aluminum hydroxide and nitric acid.<br />
H + + NO 3 - + Al 3+ + OH - HOH<br />
3. The combustion of hexane (C 6 H 14 ).<br />
2C 6 H 14 + 19O 2 12CO 2 + 14H 2 O<br />
<strong>Stoichiometry</strong> Problems:<br />
3. Determine the number of liters of oxygen gas (at STP) required to react completely with 3.86 liters of hydrogen<br />
gas by the following reaction:<br />
2H 2(g) + O 2(g) 2H 2 O (g)<br />
3.86 1 <br />
22.4 <br />
1 <br />
2 <br />
22.4 <br />
1 <br />
1.93 <br />
1. A double replacement reaction between barium chloride and sodium carbonate produces a white solid that<br />
does not dissolve in water. How many grams of this barium carbonate are produced by the complete<br />
reaction of 197.45 g of barium chloride<br />
Ba 2+ + Cl - + Na + + CO 3 -2 BaCO 3<br />
197.45 1 <br />
208.236 <br />
1 <br />
1 <br />
197.3392 <br />
1 <br />
187.12 <br />
Limiting Reagent Problems:<br />
1. How many grams of zinc chloride are produced when 5.57 g of zinc is added to 1.53 g of HCl<br />
Zn + 2HCl ZnCl 2 + H 2<br />
1 <br />
5.57 <br />
65.409 1 <br />
1 136.32 <br />
11.6 <br />
1 <br />
<br />
1 <br />
1.53 <br />
36.461 1 <br />
2 136.32 <br />
. <br />
1 <br />
<br />
(the LR is the reagent that produces the least amount of product)
<strong>Stoichiometry</strong> <strong>Unit</strong> <strong>Review</strong> <strong>Sheet</strong><br />
<strong>Name</strong> _______________________<br />
2. Using the same reaction as above, what volume of hydrogen gas is produced if 14.3 g of Zn is added to<br />
36.5 g of HCl<br />
1 <br />
14.3 <br />
65.409 1 <br />
1 22.4 <br />
. <br />
1 <br />
<br />
1 <br />
36.5 <br />
36.461 1 <br />
2 22.4 <br />
11.2 <br />
1 <br />
<br />
Percent Yield:<br />
1. You do the reaction from question 1 above (“<strong>Stoichiometry</strong> Problems”) and you isolate 1.78g of ZnCl 2 .<br />
What is your percent yield<br />
% <br />
<br />
1.78 <br />
2.86 62.2%<br />
2. You do the reaction from question 2 above (“<strong>Stoichiometry</strong> Problems”) and you isolate 4.42 L of H 2 . What<br />
is your percent yield<br />
% <br />
<br />
4.48 <br />
4.90 90.2%
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