Question 1

Ammonia reacts with fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in the production of aluminum, in uranium processing, and in the frosting of light bulbs) . 2NH3(g)  + 5F2(g)  → N2F4(g)  + 6HF(g) 
How many moles of NH3 are needed to react completely with 13.6 mol of F2?

Accepted Answer

A)  34.0 mol
B)  27.2 mol
C)  6.80 mol
D)  5.44 mol
E)  2.27 molF) B) and C)
G) B) and E)

Question 2

Hydrochloric acid can be prepared by the following reaction: 2NaCl(s)  + H2SO4(aq)  → 2HCl(g)  + Na2SO4(s)  What mass of HCl can be prepared from 2.00 mol H2SO4 and 150.g NaCl?

Accepted Answer

A)  2.57 g
B)  46.8 g
C)  93.6g
D)  146 g
E)  167gF) A) and D)
G) A) and E)

Question 3

What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical equation? V2O5(s)  + 5Ca(l)  → 2V(l)  + 5CaO(s)

Accepted Answer

A)  11.2 g
B)  5.6 g
C)  22.4 g
D)  40.0 g
E)  20.3 gF) A) and C)
G) C) and D)

Question 4

What mass of nitrogen gas is required to react completely with excess hydrogen gas to produce 13.6 g of ammonia?

Accepted Answer

A)  11.2 g
B)  0.06 g
C)  22.4 g
D)  16.5 g
E)  44.8 gF) A) and B)
G) A) and E)

Question 5

Given that CaO(s)  + H2O(l)  → Ca(OH) 2(s) , heat of reaction = −64.8 kJ/mol, how many grams of CaO must react in order to liberate 525 kJ of heat?

Accepted Answer

A)  6.92 g
B)  56.1 g
C)  454 g
D)  606 g
E)  3.40× 104 gF) B) and E)
G) None of the above

Question 6

How many grams of Cl2 can be prepared from the reaction of 16.0 g of MnO2 and 30.0 g of HCl according to the following balanced chemical equation? MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O

Accepted Answer

A)  6.52 g
B)  7.29 g
C)  13.0 g
D)  14.6 g
E)  58.4 gF) A) and B)
G) A) and D)

Question 7

The highly exothermic thermite reaction, in which aluminum reduces iron(III)  oxide to elemental iron, has been used by railroad repair crews to weld rails together. 2Al(s)  + Fe2O3(s)  → 2Fe(s)  + Al2O3(s)  heat of reaction = −847.6 kJ/mol What mass of iron is formed if 725 kJ of heat are released?

Accepted Answer

A)  23.9 g
B)  47.8 g
C)  65.3 g
D)  95.5 g
E)  112 gF) A) and B)
G) All of the above

Question 8

Aluminum reacts with oxygen to produce aluminum oxide which can be used as an adsorbent, desiccant or catalyst for organic reactions.A mixture of 82.49 g of aluminum and 117.65 g of oxygen is allowed to react.Identify the limiting reactant and determine the mass of the excess reactant present in the vessel when the reaction is complete.

Accepted Answer

A)  Oxygen is the limiting reactant; 19.81 g of aluminum remain.
B)  Oxygen is the limiting reactant; 35.16 g of aluminum remain.
C)  Aluminum is the limiting reactant; 16.70 g of oxygen remain.
D)  Aluminum is the limiting reactant; 35.16 g of oxygen remain.
E)  Aluminum is the limiting reactant; 44.27 g of oxygen remain.F) All of the above
G) C) and D) E

Question 9

What is the volume of NH3 produced in the following reaction when 3.0 L of N2 reacts with 4.0 L of H2 ? N2(g)  + 3H2(g)  → 2NH3(g)

Accepted Answer

A)  1.5 L
B)  2.7 L
C)  6.0 L
D)  7.5 L
E)  12 LF) A) and D)
G) A) and E)

Question 10

What volume of 0.200 M H2SO4 solution is required to react exactly with 50.0 mL of 0.100 M KOH? H2SO4(aq)  + 2KOH(aq)  → 2H2O(l)  + K2SO4(aq)

Accepted Answer

A)  62.5 mL
B)  12.5 mL
C)  50.0 mL
D)  25.0 mL
E)  75.0 mLF) A) and C)
G) A) and B)

Question 11

If 3.41 g of nitrogen react with 2.79 g of hydrogen to produce ammonia, what is the limiting reactant and what mass of ammonia is produced?

Accepted Answer

A)  Hydrogen is the limiting reactant and 0.22 g of ammonia are produced.
B)  Nitrogen is the limiting reactant and 2.07 g of ammonia are produced.
C)  Nitrogen is the limiting reactant and 4.15 g of ammonia are produced.
D)  Hydrogen is the limiting reactant and 23.5 g of ammonia are produced.
E)  Hydrogen is the limiting reactant and 15.8 g of ammonia are produced.F) A) and D)
G) None of the above

Question 12

Aluminum metal reacts with chlorine gas to form solid aluminum trichloride.What mass of chlorine gas is required to react completely with 163 g of aluminum?

Accepted Answer

A)  214 g
B)  286g
C)  321 g
D)  428 g
E)  643 gF) C) and D)
G) B) and D) E

Question 13

Consider the following reaction.H2(g)  + I2(s)  → 2 HI(g)  If the cylinder with a movable piston below contains 1 mol H2(g)  and 1 mol I2(s) , which represents the cylinder after the reaction is complete? 2(g)  + I2(s)  → 2 HI(g)  If the cylinder with a movable piston below contains 1 mol H2(g)  and 1 mol I2(s) , which represents the cylinder after the reaction is complete?    A)    B)    C)    D)   E) None of the above" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   2(g)  + I2(s)  → 2 HI(g)  If the cylinder with a movable piston below contains 1 mol H2(g)  and 1 mol I2(s) , which represents the cylinder after the reaction is complete?    
A)     
B)     
C)     
D)    
E)  None of the above" class="answers-bank-image d-inline" rel="preload" >
B)   2(g)  + I2(s)  → 2 HI(g)  If the cylinder with a movable piston below contains 1 mol H2(g)  and 1 mol I2(s) , which represents the cylinder after the reaction is complete?    
A)     
B)     
C)     
D)    
E)  None of the above" class="answers-bank-image d-inline" rel="preload" >
C)   2(g)  + I2(s)  → 2 HI(g)  If the cylinder with a movable piston below contains 1 mol H2(g)  and 1 mol I2(s) , which represents the cylinder after the reaction is complete?    
A)     
B)     
C)     
D)    
E)  None of the above" class="answers-bank-image d-inline" rel="preload" >
D)  2(g)  + I2(s)  → 2 HI(g)  If the cylinder with a movable piston below contains 1 mol H2(g)  and 1 mol I2(s) , which represents the cylinder after the reaction is complete?    
A)     
B)     
C)     
D)    
E)  None of the above" class="answers-bank-image d-inline" rel="preload" >
E)  None of the aboveF) B) and E)
G) A) and E)

Question 14

When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved.Calculate the volume of H2(g)  at 30.1°C and 0.85 atm that can be formed when 275 mL of 0.725 M HCl solution reacts with excess Mg to give hydrogen gas and aqueous magnesium chloride. Mg(s)  + 2HCl(aq)  → MgCl2(aq)  + H2(g)  (R = 0.08206 L • atm/K • mol)

Accepted Answer

A)  3.4 × 10−3 L
B)  2.2 L
C)  2.9 L
D)  5.8 L
E)  11.7 LF) B) and C)
G) A) and E)

Question 15

What is the maximum number of grams of ammonia, NH3, which can be obtained from the reaction of 10.0 g of H2 and 80.0 g of N2? N2 + 3H2 → 2NH3

Accepted Answer

A)  34.1 g
B)  48.6 g
C)  56.3 g
D)  90.0 g
E)  97.3 gF) A) and E)
G) A) and D)

Question 16

What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 with 8.00 g of aluminum according to the chemical equation below? 2Al + Cr2O3 → Al2O3 + 2Cr

Accepted Answer

A)  7.7 g
B)  15.4 g
C)  27.4 g
D)  30.8 g
E)  49.9 gF) A) and D)
G) A) and C)

Question 17

Tetraphosphorus hexaoxide is formed by the reaction of phosphorus with oxygen gas.If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen produce 43.3 g of P4O6, what is the percent yield for the reaction?

Accepted Answer

A)  57.5%
B)  48.8%
C)  38.0%
D)  89.4%
E)  16.3%F) B) and E)
G) A) and B)

Question 18

Methanol (CH3OH)  is converted to bromomethane (CH3Br)  as follows: CH3OH + HBr → CH3Br + H2O If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percentage yield?

Accepted Answer

A)  12.9%
B)  33.8%
C)  40.9%
D)  59.1%
E)  82.6%F) C) and E)
G) B) and C)

Question 19

What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 2.0 mole of V2O5 with 6.0 mole of calcium based on the following chemical equation? V2O5(s)  + 5Ca(l)  → 2V(l)  + 5CaO(s)

Accepted Answer

A)  1.0 mol
B)  1.6 mol
C)  2.0 mol
D)  2.4 mol
E)  4.0 molF) B) and D)
G) C) and E) D

Question 20

How many milliliters of 0.0150 M KOH are required to react exactly with 75.0 mL of 0.0150 M H3PO4? H3PO4(aq)  + 3KOH(aq)  → K3PO4(aq)  + 3H2O(l)

Accepted Answer

A)  25.0 mL
B)  1000 mL
C)  225 mL
D)  250 mL
E)  75.0 mLF) D) and E)
G) A) and B)

Exam 11: Using Balanced Chemical Equations

Correct Answer
verified

Hydrochloric acid can be prepared by the following reaction: 2NaCl(s) + H₂SO₄(aq) → 2HCl(g) + Na₂SO₄(s) What mass of HCl can be prepared from 2.00 mol H₂SO₄ and 150.g NaCl?

Correct Answer
verified

What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V₂O₅ with 40.0 g of calcium based on the following chemical equation? V₂O₅(s) + 5Ca(l) → 2V(l) + 5CaO(s)

Correct Answer
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What mass of nitrogen gas is required to react completely with excess hydrogen gas to produce 13.6 g of ammonia?

Correct Answer
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Given that CaO(s) + H₂O(l) → Ca(OH) ₂(s) , heat of reaction = −64.8 kJ/mol, how many grams of CaO must react in order to liberate 525 kJ of heat?

Correct Answer
verified

How many grams of Cl₂ can be prepared from the reaction of 16.0 g of MnO₂ and 30.0 g of HCl according to the following balanced chemical equation? MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O

Correct Answer
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Correct Answer
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Correct Answer
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E

What is the volume of NH₃ produced in the following reaction when 3.0 L of N₂ reacts with 4.0 L of H₂ ? N₂(g) + 3H₂(g) → 2NH₃(g)

Correct Answer
verified

What volume of 0.200 M H₂SO₄ solution is required to react exactly with 50.0 mL of 0.100 M KOH? H₂SO₄(aq) + 2KOH(aq) → 2H₂O(l) + K₂SO₄(aq)

Correct Answer
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If 3.41 g of nitrogen react with 2.79 g of hydrogen to produce ammonia, what is the limiting reactant and what mass of ammonia is produced?

Correct Answer
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Aluminum metal reacts with chlorine gas to form solid aluminum trichloride.What mass of chlorine gas is required to react completely with 163 g of aluminum?

Correct Answer
verified
E

Consider the following reaction.H₂(g) + I₂(s) → 2 HI(g) If the cylinder with a movable piston below contains 1 mol H₂(g) and 1 mol I₂(s) , which represents the cylinder after the reaction is complete?

Correct Answer
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Correct Answer
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What is the maximum number of grams of ammonia, NH₃, which can be obtained from the reaction of 10.0 g of H₂ and 80.0 g of N₂? N₂ + 3H₂ → 2NH₃

Correct Answer
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What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr₂O₃ with 8.00 g of aluminum according to the chemical equation below? 2Al + Cr₂O₃ → Al₂O₃ + 2Cr

Correct Answer
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Tetraphosphorus hexaoxide is formed by the reaction of phosphorus with oxygen gas.If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen produce 43.3 g of P₄O₆, what is the percent yield for the reaction?

Correct Answer
verified

Methanol (CH₃OH) is converted to bromomethane (CH₃Br) as follows: CH₃OH + HBr → CH₃Br + H₂O If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percentage yield?

Correct Answer
verified

What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 2.0 mole of V₂O₅ with 6.0 mole of calcium based on the following chemical equation? V₂O₅(s) + 5Ca(l) → 2V(l) + 5CaO(s)

Correct Answer
verified
D

How many milliliters of 0.0150 M KOH are required to react exactly with 75.0 mL of 0.0150 M H₃PO₄? H₃PO₄(aq) + 3KOH(aq) → K₃PO₄(aq) + 3H₂O(l)

Correct Answer
verified

Exam 11: Using Balanced Chemical Equations

Ammonia reacts with fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in the production of aluminum, in uranium processing, and in the frosting of light bulbs) . 2NH3(g) + 5F2(g) → N2F4(g) + 6HF(g) How many moles of NH3 are needed to react completely with 13.6 mol of F2?

Correct AnswerverifiedShow Answer

Hydrochloric acid can be prepared by the following reaction: 2NaCl(s) + H2SO4(aq) → 2HCl(g) + Na2SO4(s) What mass of HCl can be prepared from 2.00 mol H2SO4 and 150.g NaCl?

Correct AnswerverifiedShow Answer

What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical equation? V2O5(s) + 5Ca(l) → 2V(l) + 5CaO(s)

Correct AnswerverifiedShow Answer

What mass of nitrogen gas is required to react completely with excess hydrogen gas to produce 13.6 g of ammonia?

Correct AnswerverifiedShow Answer

Given that CaO(s) + H2O(l) → Ca(OH) 2(s) , heat of reaction = −64.8 kJ/mol, how many grams of CaO must react in order to liberate 525 kJ of heat?

Correct AnswerverifiedShow Answer

How many grams of Cl2 can be prepared from the reaction of 16.0 g of MnO2 and 30.0 g of HCl according to the following balanced chemical equation? MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O

Correct AnswerverifiedShow Answer

The highly exothermic thermite reaction, in which aluminum reduces iron(III) oxide to elemental iron, has been used by railroad repair crews to weld rails together. 2Al(s) + Fe2O3(s) → 2Fe(s) + Al2O3(s) heat of reaction = −847.6 kJ/mol What mass of iron is formed if 725 kJ of heat are released?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedE

What is the volume of NH3 produced in the following reaction when 3.0 L of N2 reacts with 4.0 L of H2 ? N2(g) + 3H2(g) → 2NH3(g)

Correct AnswerverifiedShow Answer

What volume of 0.200 M H2SO4 solution is required to react exactly with 50.0 mL of 0.100 M KOH? H2SO4(aq) + 2KOH(aq) → 2H2O(l) + K2SO4(aq)

Correct AnswerverifiedShow Answer

If 3.41 g of nitrogen react with 2.79 g of hydrogen to produce ammonia, what is the limiting reactant and what mass of ammonia is produced?

Correct AnswerverifiedShow Answer

Aluminum metal reacts with chlorine gas to form solid aluminum trichloride.What mass of chlorine gas is required to react completely with 163 g of aluminum?

Correct AnswerverifiedE

Consider the following reaction.H2(g) + I2(s) → 2 HI(g) If the cylinder with a movable piston below contains 1 mol H2(g) and 1 mol I2(s) , which represents the cylinder after the reaction is complete?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What is the maximum number of grams of ammonia, NH3, which can be obtained from the reaction of 10.0 g of H2 and 80.0 g of N2? N2 + 3H2 → 2NH3

Correct AnswerverifiedShow Answer

What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 with 8.00 g of aluminum according to the chemical equation below? 2Al + Cr2O3 → Al2O3 + 2Cr

Correct AnswerverifiedShow Answer

Tetraphosphorus hexaoxide is formed by the reaction of phosphorus with oxygen gas.If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen produce 43.3 g of P4O6, what is the percent yield for the reaction?

Correct AnswerverifiedShow Answer

Methanol (CH3OH) is converted to bromomethane (CH3Br) as follows: CH3OH + HBr → CH3Br + H2O If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percentage yield?

Correct AnswerverifiedShow Answer

What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 2.0 mole of V2O5 with 6.0 mole of calcium based on the following chemical equation? V2O5(s) + 5Ca(l) → 2V(l) + 5CaO(s)

Correct AnswerverifiedD

How many milliliters of 0.0150 M KOH are required to react exactly with 75.0 mL of 0.0150 M H3PO4? H3PO4(aq) + 3KOH(aq) → K3PO4(aq) + 3H2O(l)

Correct AnswerverifiedShow Answer

Correct Answer
verified

Hydrochloric acid can be prepared by the following reaction: 2NaCl(s) + H₂SO₄(aq) → 2HCl(g) + Na₂SO₄(s) What mass of HCl can be prepared from 2.00 mol H₂SO₄ and 150.g NaCl?

Correct Answer
verified

What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V₂O₅ with 40.0 g of calcium based on the following chemical equation? V₂O₅(s) + 5Ca(l) → 2V(l) + 5CaO(s)

Correct Answer
verified

Correct Answer
verified

Given that CaO(s) + H₂O(l) → Ca(OH) ₂(s) , heat of reaction = −64.8 kJ/mol, how many grams of CaO must react in order to liberate 525 kJ of heat?

Correct Answer
verified

How many grams of Cl₂ can be prepared from the reaction of 16.0 g of MnO₂ and 30.0 g of HCl according to the following balanced chemical equation? MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O

Correct Answer
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Correct Answer
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Correct Answer
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E

What is the volume of NH₃ produced in the following reaction when 3.0 L of N₂ reacts with 4.0 L of H₂ ? N₂(g) + 3H₂(g) → 2NH₃(g)

Correct Answer
verified

What volume of 0.200 M H₂SO₄ solution is required to react exactly with 50.0 mL of 0.100 M KOH? H₂SO₄(aq) + 2KOH(aq) → 2H₂O(l) + K₂SO₄(aq)

Correct Answer
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Correct Answer
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Correct Answer
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E

Consider the following reaction.H₂(g) + I₂(s) → 2 HI(g) If the cylinder with a movable piston below contains 1 mol H₂(g) and 1 mol I₂(s) , which represents the cylinder after the reaction is complete?

Correct Answer
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Correct Answer
verified

What is the maximum number of grams of ammonia, NH₃, which can be obtained from the reaction of 10.0 g of H₂ and 80.0 g of N₂? N₂ + 3H₂ → 2NH₃

Correct Answer
verified

What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr₂O₃ with 8.00 g of aluminum according to the chemical equation below? 2Al + Cr₂O₃ → Al₂O₃ + 2Cr

Correct Answer
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Tetraphosphorus hexaoxide is formed by the reaction of phosphorus with oxygen gas.If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen produce 43.3 g of P₄O₆, what is the percent yield for the reaction?

Correct Answer
verified

Methanol (CH₃OH) is converted to bromomethane (CH₃Br) as follows: CH₃OH + HBr → CH₃Br + H₂O If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percentage yield?

Correct Answer
verified

What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 2.0 mole of V₂O₅ with 6.0 mole of calcium based on the following chemical equation? V₂O₅(s) + 5Ca(l) → 2V(l) + 5CaO(s)

Correct Answer
verified
D

How many milliliters of 0.0150 M KOH are required to react exactly with 75.0 mL of 0.0150 M H₃PO₄? H₃PO₄(aq) + 3KOH(aq) → K₃PO₄(aq) + 3H₂O(l)

Correct Answer
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