Exam 4: Chemical Reactions and Stoichiometry
Exam 1: Units of Measurement for Physical and Chemical Change173 Questions
Exam 2: Atoms and Elements161 Questions
Exam 3: Molecules,compounds,and Nomenclature172 Questions
Exam 4: Chemical Reactions and Stoichiometry247 Questions
Exam 5: Gases146 Questions
Exam 6: Thermochemistry145 Questions
Exam 7: The Quantum-Mechanical Model of the Atom164 Questions
Exam 8: Periodic Properties of the Elements129 Questions
Exam 9: Chemical Bonding I: Lewis Theory136 Questions
Exam 10: Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory158 Questions
Exam 11: Liquids, solids, and Intermolecular Forces127 Questions
Exam 12: Solutions153 Questions
Exam 13: Chemical Kinetics156 Questions
Exam 14: Chemical Equilibrium124 Questions
Exam 15: Acids and Bases141 Questions
Exam 16: Aqueous Ionic Equilibrium159 Questions
Exam 17: Gibbs Energy and Thermodynamics119 Questions
Exam 18: Electrochemistry107 Questions
Exam 19: Radioactivity and Nuclear Chemistry108 Questions
Exam 20: Organic Chemistry I: Structures103 Questions
Exam 21: Organic Chemistry II: Reactions93 Questions
Exam 22: Biochemistry49 Questions
Exam 23: Chemistry of the Nonmetals45 Questions
Exam 24: Metals and Metallurgy42 Questions
Exam 25: Transition Metals and Coordination Compounds50 Questions
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According to the following reaction,what volume of 0.244 mol L-1 KCl solution is required to react exactly with 50.0 mL of a 0.210 mol L-1 Pb(NO3)2 solution? 2KCl(aq)+ Pb(NO3)2(aq)→ PbCl2(s)+ 2KNO3(aq)
(Multiple Choice)
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What mass (in g)of AgCl is formed from the reaction of 75.0 mL of a 0.078 mol L-1 AgC2H3O2 solution with 55.0 mL of a 0.109 mol L-1 MgCl2 solution?
2AgC2H3O2(aq)+ MgCl2(aq)→ 2AgCl(s)+ Mg(C2H3O2)2(aq)
(Multiple Choice)
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What are the required coefficients to properly balance the following chemical reaction? PbS(s)+ HBr(aq)→ PbBr2(s)+ H2S(g)
(Multiple Choice)
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How many moles of BCl3 are needed to produce 10.0 g of HCl(aq)in the following reaction?
BCl3(g)+ 3H2O(l)→ 3HCl(aq)+ B(OH)3(aq)
(Multiple Choice)
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Determine the reducing agent in the following reaction.
2Li(s)+ Fe(C2H3O2)2(aq)→ 2LiC2H3O2(aq)+ Fe(s)
(Multiple Choice)
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Pure acetic acid ( )is a liquid and is known as glacial acetic acid.Calculate the molarity of a solution prepared by dissolving 50.00 mL of glacial acetic acid at 25 °C in sufficient water to give 500.0 mL of solution.The density of glacial acetic acid at 25 °C is 1.05 g mL-1.
(Multiple Choice)
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What are the required coefficients to properly balance the following chemical reaction? N2H4(l)→ NH3(g)+ N2(g)
(Multiple Choice)
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Aluminum metal reacts with aqueous iron(II)chloride to form aqueous aluminum chloride and iron metal.What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest,whole-number stoichiometric coefficients?
(Multiple Choice)
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When silver nitrate reacts with barium chloride,silver chloride and barium nitrate are formed.How many grams of silver chloride are formed when 10.0 g of silver nitrate reacts with 15.0 g of barium chloride?
(Multiple Choice)
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Identify the complete ionic equation for the reaction (if any)that occurs when aqueous solutions of lithium sulfide and copper(II)nitrate are mixed.
(Multiple Choice)
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What element is being reduced in the following (unbalanced)redox reaction? H2O2(l)+ ClO2(aq)→ ClO2- (aq)+ O2(g)
(Multiple Choice)
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Which of the following pairs of aqueous solutions will form a precipitate when mixed?
(Multiple Choice)
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What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest,whole-number coefficients?
________ C3H6O(l)+ ________ O2(g)→ ________ CO2(g)+ ________ H2O(l)
(Multiple Choice)
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How many millilitres of 0.200 mol L-1 FeCl3 are needed to react with an excess of Na2S to produce 1.38 g of Fe2S3 if the percent yield for the reaction is 65.0%?
3Na2S(aq)+ 2FeCl3(aq)→ Fe2S3(s)+ 6NaCl(aq)
(Multiple Choice)
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Determine the concentration of a solution prepared by diluting 20.0 mL of 0.200 mol L-1 NaCl to 250.0 mL.
(Multiple Choice)
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According to the following balanced reaction,how many moles of NO are formed from 8.44 moles of NO2 if there is plenty of water present?
3NO2(g)+ H2O(l)→ 2HNO3(aq)+ NO(g)
(Multiple Choice)
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What is the molarity of a NaOH solution if 28.2 mL of a 0.355 mol L-1 H2SO4 solution is required to neutralize a 25.0 mL sample of the NaOH solution?
(Multiple Choice)
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Two samples of potassium iodide are decomposed into their constituent elements.The first sample produced 13.0 g of potassium and 42.3 g of iodine.If the second sample produced 24.4 kg of potassium,how many kilograms of iodine were produced?
(Multiple Choice)
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How many grams of calcium chloride are needed to produce 1.50 g of potassium chloride?
CaCl2(aq)+ K2CO3(aq)→ 2KCl(aq)+ CaCO3(aq)
(Multiple Choice)
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