Exam 4: Chemical Reactions and Stoichiometry

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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)

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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)

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What are the required coefficients to properly balance the following chemical reaction? PbS(s)+ HBr(aq)→ PbBr2(s)+ H2S(g)

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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)

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Determine the reducing agent in the following reaction. 2Li(s)+ Fe(C2H3O2)2(aq)→ 2LiC2H3O2(aq)+ Fe(s)

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Pure acetic acid ( HC2\mathrm { HC } _ { 2 } H3\mathrm { H } _ { 3 } O2\mathrm { O } _ { 2 } )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.

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What are the required coefficients to properly balance the following chemical reaction? N2H4(l)→ NH3(g)+ N2(g)

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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?

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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?

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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.

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What element is being reduced in the following (unbalanced)redox reaction? H2O2(l)+ ClO2(aq)→ ClO2- (aq)+ O2(g)

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Which of the following pairs of aqueous solutions will form a precipitate when mixed?

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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)

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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)

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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.

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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)

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Give an example of an inert electrode.

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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?

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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?

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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)

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