Question 1

Which of the following compounds is an Arrhenius base?

Accepted Answer

A) C6H12O6 
B) HOCl 
C) H2SO4 
D) C6H5NH2

Question 2

How many of the following compounds are insoluble in water? KC2H3O2 CaSO4 SrS AlPO4

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 3

Match the following.

-NaCl(aq)+ AgNO3(aq)→ AgCl(s)+ NaNO3(aq)

Accepted Answer

A) acid-base 
B) oxidation-reduction 
C) combustion 
D) gas evolution 
E) double displacement reaction

Question 4

What element is undergoing oxidation (if any)in the following reaction?
 Zn(s)+ 2AgNO3(aq)→ Zn(NO3)2(aq)+ 2Ag(s)

Accepted Answer

A) Zn 
B) N 
C) O 
D) Ag 
E) This is not an oxidation-reduction reaction.

Question 5

Pure acetic acid (HC2H3O2)is a liquid and is known as glacial acetic acid. Calculate the molarity of a solution prepared by dissolving 10.00 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.

Accepted Answer

A) 1.26 × 103 mol L-1 
B) 21.0 mol L-1 
C) 0.0210 mol L-1 
D) 0.350 mol L-1 
E) 3.50 × 10-4 mol L-1

Question 6

How many moles of CH3CH2OH are contained in 548 mL of a 0.0788 mol L-1 CH3CH2OH solution?

Accepted Answer

A) 4.32 × 10-2 mol 
B) 2.32 × 10-2 mol 
C) 6.95 × 10-2 mol 
D) 1.44 × 10-2 mol 
E) 5.26 × 10-2 mol

Question 7

Consider the following reaction. How many moles of oxygen are required to produce 2.33 moles of water? Assume that there is excess C3H7SH present. C3H7SH(l)+ 6O2(g)→ 3CO2(g)+ SO2(g)+ 4H2O (g)

Accepted Answer

A) 1.55 moles O2 
B) 3.50 moles O2 
C) 2.33 moles O2 
D) 4.14 moles O2 
E) 6.21 moles O2

Question 8

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

Accepted Answer

A) AgNO3(aq) 
B) Ca(NO3)2(aq) 
C) Cu(NO3)2(aq) 
D) Fe(NO3)2(aq)

Question 9

Which one of the following compounds is soluble in water?

Accepted Answer

A) Cu3(PO4)2 
B) CoS 
C) Pb(NO3)2 
D) ZnCO3

Question 10

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s)+ H2O(l)→ Ca(OH)2(s)
A 4.50 g sample of CaO is reacted with 4.34 g of H2O. How many grams of water remain after the reaction is complete?

Accepted Answer

A) 0.00 
B) 0.00892 
C) 2.90 
D) 1.04 
E) 0.161

Question 11

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

Accepted Answer

A) K2CO3 + NaCl 
B) Na2SO4 + KOH 
C) CaS + Na2SO4 
D) None of these solution pairs will produce a precipitate. 
E) All of these solution pairs will produce a precipitate.

Question 12

Determine the oxidation state of S in MgSO4.

Accepted Answer

A) -4 
B) +2 
C) +4 
D) +6 
E) -2

Question 13

Balance the following equation: _____ C₁₀H₁₂ + _____ O₂ → _____ H₂O + _____ CO₂

Accepted Answer

The answer of Balance the following equation: _____ C₁₀H₁₂ + _____...

Question 14

What are the required coefficients to properly balance the following chemical reaction? 
CH4(g)+ H2O(g)→ CO(g)+ H2(g)

Accepted Answer

A) 1, 2, 2, 3 
B) 1, 1, 2, 2 
C) 2, 1, 1, 3 
D) 2, 2, 1, 1 
E) 1, 1, 1, 3

Question 15

How many molecules of sucrose (C12H22O11, molar mass = 342.30 g mol-1)are contained in 14.3 mL of 0.140 mol L-1 sucrose solution?

Accepted Answer

A) 8.29 × 1022 molecules C12H22O11 
B) 1.21 × 1021 molecules C12H22O11 
C) 6.15 × 1022 molecules C12H22O11 
D) 1.63 × 1023 molecules C12H22O11 
E) 5.90 × 1024 molecules C12H22O11

Question 16

How many grams of H2 gas can be produced by the reaction of 54.0 grams of Al(s)with an excess of dilute hydrochloric acid in the reaction shown below? 2Al(s)+ 6HCl(aq)→ 2AlCl3(aq)+ 3H2(g)

Accepted Answer

A) 2.68 g 
B) 4.04 g 
C) 6.05 g 
D) 12.1 g

Question 17

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)

Accepted Answer

A) 0.838 g 
B) 1.72 g 
C) 0.859 g 
D) 2.56 g 
E) 1.70 g

Question 18

What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest, whole-number coefficients? _____ C H4O(l)+ _____ O2(g)→ _____ CO2(g)+ _____ H2O(l)

Accepted Answer

A) 9 
B) 7 
C) 5 
D) 3

Question 19

What volume of 0.305 mol L-1 AgNO3 is required to react exactly with 155.0 mL of 0.274 mol L-1 Na2SO4 solution? Hint: You will want to write a balanced reaction.

Accepted Answer

A) 581 mL 
B) 173 mL 
C) 345 mL 
D) 139 mL 
E) 278 mL

Question 20

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl3). If it is the only product, what mass of PCl3 is formed?

Accepted Answer

A) 30.15 g 
B) 54.93 g 
C) 140.01 g 
D) 79.71 g 
E) 91.86 g

Exam 4: Chemical Reactions and Stoichiometry

Which of the following compounds is an Arrhenius base?

How many of the following compounds are insoluble in water? KC₂H₃O₂CaSO₄ SrS AlPO₄

Match the following. -NaCl(aq) + AgNO₃(aq) → AgCl(s) + NaNO₃(aq)

What element is undergoing oxidation (if any) in the following reaction? Zn(s) + 2AgNO₃(aq) → Zn(NO₃) ₂(aq) + 2Ag(s)

Pure acetic acid (HC₂H₃O₂) is a liquid and is known as glacial acetic acid. Calculate the molarity of a solution prepared by dissolving 10.00 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.

How many moles of CH₃CH₂OH are contained in 548 mL of a 0.0788 mol L^-1 CH₃CH₂OH solution?

Consider the following reaction. How many moles of oxygen are required to produce 2.33 moles of water? Assume that there is excess C₃H₇SH present. C₃H₇SH(l) + 6O₂(g) → 3CO₂(g) + SO₂(g) + 4H₂O (g)

What reagent could not be used to separate Br^- from CO₃^2- when added to an aqueous solution containing both?

Which one of the following compounds is soluble in water?

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H₂O(l) → Ca(OH) ₂(s) A 4.50 g sample of CaO is reacted with 4.34 g of H₂O. How many grams of water remain after the reaction is complete?

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

Determine the oxidation state of S in MgSO₄.

Balance the following equation: ___ C₁₀H₁₂ + _ O₂ → _ H₂O + ___ CO₂

What are the required coefficients to properly balance the following chemical reaction? CH₄(g) + H₂O(g) → CO(g) + H₂(g)

How many molecules of sucrose (C₁₂H₂₂O₁₁, molar mass = 342.30 g mol^-1) are contained in 14.3 mL of 0.140 mol L^-1 sucrose solution?

How many grams of H₂ gas can be produced by the reaction of 54.0 grams of Al(s) with an excess of dilute hydrochloric acid in the reaction shown below? 2Al(s) + 6HCl(aq) → 2AlCl₃(aq) + 3H₂(g)

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)

What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest, whole-number coefficients? ___ CH₄O(l) + _ O₂(g) → _ CO₂(g) + ___ H₂O(l)

What volume of 0.305 mol L^-1 AgNO₃ is required to react exactly with 155.0 mL of 0.274 mol L^-1 Na₂SO₄ solution? Hint: You will want to write a balanced reaction.

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl₃) . If it is the only product, what mass of PCl₃ is formed?

Exam 4: Chemical Reactions and Stoichiometry

Which of the following compounds is an Arrhenius base?

How many of the following compounds are insoluble in water? KC2H3O2 CaSO4 SrS AlPO4

Match the following. -NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)

What element is undergoing oxidation (if any) in the following reaction? Zn(s) + 2AgNO3(aq) → Zn(NO3) 2(aq) + 2Ag(s)

Pure acetic acid (HC2H3O2) is a liquid and is known as glacial acetic acid. Calculate the molarity of a solution prepared by dissolving 10.00 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.

How many moles of CH3CH2OH are contained in 548 mL of a 0.0788 mol L-1 CH3CH2OH solution?

Consider the following reaction. How many moles of oxygen are required to produce 2.33 moles of water? Assume that there is excess C3H7SH present. C3H7SH(l) + 6O2(g) → 3CO2(g) + SO2(g) + 4H2O (g)

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

Which one of the following compounds is soluble in water?

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) → Ca(OH) 2(s) A 4.50 g sample of CaO is reacted with 4.34 g of H2O. How many grams of water remain after the reaction is complete?

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

Determine the oxidation state of S in MgSO4.

Balance the following equation: _____ C10H12 + _____ O2 → _____ H2O + _____ CO2

What are the required coefficients to properly balance the following chemical reaction? CH4(g) + H2O(g) → CO(g) + H2(g)

How many molecules of sucrose (C12H22O11, molar mass = 342.30 g mol-1) are contained in 14.3 mL of 0.140 mol L-1 sucrose solution?

How many grams of H2 gas can be produced by the reaction of 54.0 grams of Al(s) with an excess of dilute hydrochloric acid in the reaction shown below? 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)

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)

What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest, whole-number coefficients? _____ C H4O(l) + _____ O2(g) → _____ CO2(g) + _____ H2O(l)

What volume of 0.305 mol L-1 AgNO3 is required to react exactly with 155.0 mL of 0.274 mol L-1 Na2SO4 solution? Hint: You will want to write a balanced reaction.

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl3) . If it is the only product, what mass of PCl3 is formed?

How many of the following compounds are insoluble in water? KC₂H₃O₂CaSO₄ SrS AlPO₄

Match the following. -NaCl(aq) + AgNO₃(aq) → AgCl(s) + NaNO₃(aq)

What element is undergoing oxidation (if any) in the following reaction? Zn(s) + 2AgNO₃(aq) → Zn(NO₃) ₂(aq) + 2Ag(s)

Pure acetic acid (HC₂H₃O₂) is a liquid and is known as glacial acetic acid. Calculate the molarity of a solution prepared by dissolving 10.00 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.

How many moles of CH₃CH₂OH are contained in 548 mL of a 0.0788 mol L^-1 CH₃CH₂OH solution?

Consider the following reaction. How many moles of oxygen are required to produce 2.33 moles of water? Assume that there is excess C₃H₇SH present. C₃H₇SH(l) + 6O₂(g) → 3CO₂(g) + SO₂(g) + 4H₂O (g)

What reagent could not be used to separate Br^- from CO₃^2- when added to an aqueous solution containing both?

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H₂O(l) → Ca(OH) ₂(s) A 4.50 g sample of CaO is reacted with 4.34 g of H₂O. How many grams of water remain after the reaction is complete?

Determine the oxidation state of S in MgSO₄.

Balance the following equation: ___ C₁₀H₁₂ + _ O₂ → _ H₂O + ___ CO₂

What are the required coefficients to properly balance the following chemical reaction? CH₄(g) + H₂O(g) → CO(g) + H₂(g)

How many molecules of sucrose (C₁₂H₂₂O₁₁, molar mass = 342.30 g mol^-1) are contained in 14.3 mL of 0.140 mol L^-1 sucrose solution?

How many grams of H₂ gas can be produced by the reaction of 54.0 grams of Al(s) with an excess of dilute hydrochloric acid in the reaction shown below? 2Al(s) + 6HCl(aq) → 2AlCl₃(aq) + 3H₂(g)

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)

What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest, whole-number coefficients? ___ CH₄O(l) + _ O₂(g) → _ CO₂(g) + ___ H₂O(l)

What volume of 0.305 mol L^-1 AgNO₃ is required to react exactly with 155.0 mL of 0.274 mol L^-1 Na₂SO₄ solution? Hint: You will want to write a balanced reaction.

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PCl₃) . If it is the only product, what mass of PCl₃ is formed?