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Stoichiometry Practice Problems
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tarix | 05.03.2018 | ölçüsü | 21,48 Kb. | | #30292 |
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Stoichiometry Practice Problems
Be sure to balance all equations before you start calculating! Answer key is at the end.
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Lithium hydroxide reacts with hydrobromic acid to produce lithium bromide and water. If you start with ten grams of lithium hydroxide, how many grams of lithium bromide will be produced?
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Ethylene (C2H4 ) reacts with oxygen gas to produce carbon dioxide and water. If you start with 45 grams of ethylene, how many grams of carbon dioxide will be produced?
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Given the equation: HCl + Na2SO4 NaCl + H2SO4
If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced?
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Given the following equation: LiOH + KCl LiCl + KOH
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I began this reaction with 20 grams of lithium hydroxide. What is my theoretical yield of lithium chloride?
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I actually produced 6 grams of lithium chloride. What is my percent yield?
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Given the following equation: C3H8 + O2 CO2 + H2O
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If I start with 5 grams of C3H8, what is my theoretical yield of water?
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I got a percent yield of 75%. How many grams of water did I make?
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Be + 2 HCl BeCl2 + H2
My theoretical yield of beryllium chloride was 10.7 grams. If my actual yield was 4.5 grams, what was my percent yield?
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Given the reaction: NaCl + CaO CaCl2 + Na2O
What is my theoretical yield of sodium oxide if I start with 20 grams of calcium oxide?
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FeBr2 + 2 KCl FeCl2 + 2 KBr
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What is my theoretical yield of iron (II) chloride if I start with 34 grams of iron (II) bromide?
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What is my percent yield of iron (II) chloride if my actual yield is 4 grams?
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TiS + H2O H2S + TiO
What is my percent yield of titanium (II) oxide if I start with 20 grams of titanium (II) sulfide and my actual yield of titanium (II) oxide is 22 grams?
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U + 3 Br2 UBr6
What is my actual yield of uranium hexabromide if I start with 100 grams of uranium and 250 grams of bromine, and get a percent yield of 83% ?
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Sulfur dioxide can be produced in the laboratory by the reaction of hydrochloric acid and a sulfite salt such as sodium sulfite. (Na2SO3 + 2HCl 2NaCl + SO2 + H2O) What mass of SO2 can be made from 25.0 g or Na2SO3 and 22.0 g of HCl?
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The rare earth metal terbium is produced from terbium (III) fluoride and calcium metal by the following single replacement reaction: 2TbF3 + 3 Ca 3CaF2 + 2Tb
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Given 27.5 g of TbF3 and 6.96 g of Ca, how many grams of terbium could be produced?
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How many grams of the excess reactant is left over?
Answer Key
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LiOH + HBr LiBr + H2O
If you start with ten grams of lithium hydroxide, how many grams of lithium bromide will be produced? 36.3 grams
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C2H4 + 3 O2 2 CO2 + 2 H2O
If you start with 45 grams of ethylene (C2H4), how many grams of carbon dioxide will be produced? 141.4 grams
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2 HCl + Na2SO4 2 NaCl + H2SO4
If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? 26.9 grams
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Given the following equation: LiOH + KCl LiCl + KOH
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I began this reaction with 20 grams of lithium hydroxide. What is my theoretical yield of lithium chloride? 35.5 grams
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I actually produced 6 grams of lithium chloride. What is my percent yield? 16.9%
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Given the following equation: C3H8 + 5 O2 3 CO2 + 4 H2O
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If I start with 5 grams of C3H8, what is my theoretical yield of water? 8.2 grams
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I got a percent yield of 75%. How many grams of water did I make? 6.1 grams
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Be + 2 HCl BeCl2 + H2
My theoretical yield of beryllium chloride was 10.7 grams. If my actual yield was 4.5 grams, what was my percent yield? 42.1 %
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Given the reaction: 2 NaCl + CaO CaCl2 + Na2O
What is my theoretical yield of sodium oxide if I start with 20 grams of calcium oxide?
22.1 grams
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FeBr2 + 2 KCl FeCl2 + 2 KBr
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What is my theoretical yield of iron (II) chloride if I start with 34 grams of iron (II) bromide? 20.0 grams of FeCl2
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What is my percent yield of iron (II) chloride if my actual yield is 4 grams? 20 %
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TiS + H2O H2S + TiO
What is my percent yield of titanium (II) oxide if I start with 20 grams of titanium (II) sulfide and my actual yield of titanium (II) oxide is 22 grams? 137.5 % (theoretical yield is 16.0 grams—trick question; you should know that 100% is the highest yield possible)
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U + 3 Br2 UBr6
What is my actual yield of uranium hexabromide if I start with 100 grams of uranium and 250 grams of bromine, and get a percent yield of 83% ? 250 grams UBr6
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Sulfur dioxide can be produced in the laboratory by the reaction of hydrochloric acid and a sulfite salt such as sodium sulfite. (Na2SO3 + 2HCl 2NaCl + SO2 + H2O) What mass of SO2 can be made from 25.0 g or Na2SO3 and 22.0 g of HCl? 11.3 grams SO2
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The rare earth metal terbium is produced from terbium (III) fluoride and calcium metal by the following single replacement reaction: 2TbF3 + 3 Ca 3CaF2 + 2Tb
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Given 27.5 g of TbF3 and 6.96 g of Ca, how many grams of terbium could be produced? 18.4 grams Tb
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How many grams of the excess reactant is left over? 2.4 grams TbF3
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