Question 1

Which of the following compounds is insoluble in water?

Accepted Answer

A) FeCO3 
B) K2CO3 
C) (NH4)2CO3 
D) Na2CO3 
E) Li2CO3 
A) FeCO3 
B) K2CO3 
C) (NH4)2CO3 
D) Na2CO3 
E) Li2CO3

Question 2

Which of the following is a weak base in aqueous solution?

Accepted Answer

A) HOCl 
B) LiOH 
C) NH3 
D) HI 
E) Mg(OH)2 
A) HOCl 
B) LiOH 
C) NH3 
D) HI 
E) Mg(OH)2

Question 3

Which of the following reactions is an oxidation-reduction reaction?

Accepted Answer

A) CaCO3(s)+ 2HCl(aq)→ CaCl2(aq)+ H2O(l)+ CO2(g) 
B) NH4NO3(aq)→ N2O(g)+ 2H2O(l) 
C) AgNO3(aq)+ KI(aq)→ AgI(s)+ KNO3(aq) 
D) CaO(s)+ SO3(g)→ CaSO4(s) 
E) H2SO4(aq)+ 2NaOH(s)→ Na2SO4(aq)+ 2H2O(l) 
A) CaCO3(s)+ 2HCl(aq)→ CaCl2(aq)+ H2O(l)+ CO2(g) 
B) NH4NO3(aq)→ N2O(g)+ 2H2O(l) 
C) AgNO3(aq)+ KI(aq)→ AgI(s)+ KNO3(aq) 
D) CaO(s)+ SO3(g)→ CaSO4(s) 
E) H2SO4(aq)+ 2NaOH(s)→ Na2SO4(aq)+ 2H2O(l)

Question 4

Which of the following is a weak electrolyte in aqueous solution?

Accepted Answer

A) HClO4 
B) H2SO4 
C) H3PO4 
D) HNO3 
E) HI 
A) HClO4 
B) H2SO4 
C) H3PO4 
D) HNO3 
E) HI

Question 5

Which of the following compounds is soluble in water?

Accepted Answer

A) AgCl 
B) AgI 
C) PbSO4 
D) Pb(C2H3O2)2 
E) HgI2 
A) AgCl 
B) AgI 
C) PbSO4 
D) Pb(C2H3O2)2 
E) HgI2

Question 6

Calculate the molarity of a solution that contains 14.6 g of NaOH (40.0 g/mol)in 491 mL of solution.

Accepted Answer

A) 0.179 M 
B) 1.19 × 103 M 
C) 1.34 M 
D) 1.79 × 105 M 
E) 0.743 M 
A) 0.179 M 
B) 1.19 × 103 M 
C) 1.34 M 
D) 1.79 × 105 M 
E) 0.743 M

Question 7

Consider the reaction of sulfur dioxide and water,which is represented by the following equation:
2SO2(g)+ 2H2O(g)→ 2H2S(g)+ 3O2(g)
How many moles of electrons are transferred according to the equation that is written?

Accepted Answer

A) 2 
B) 6 
C) 4 
D) 12 
E) 8 
A) 2 
B) 6 
C) 4 
D) 12 
E) 8

Question 8

In order to dilute 71.1 mL of 0.915 M HCl to 0.100 M,the volume of water that must be added is

Accepted Answer

A) 63.3 mL. 
B) 7.77 mL. 
C) 6.51 × 102 mL. 
D) 1.29 × 10-3 mL. 
E) 2 × 102 mL. 
A) 63.3 mL. 
B) 7.77 mL. 
C) 6.51 × 102 mL. 
D) 1.29 × 10-3 mL. 
E) 2 × 102 mL.

Question 9

Which of the following would not be depicted as the individual ions on the reactant side of a complete ionic reaction?

Accepted Answer

A) KOH 
B) HI 
C) CuBr2 
D) CuCO3 
E) TiI3 
A) KOH 
B) HI 
C) CuBr2 
D) CuCO3 
E) TiI3

Question 10

Which of the following is a weak base in aqueous solution?

Accepted Answer

A) H2CO3 
B) Ba(OH)2 
C) B(OH)3 
D) LiOH 
E) N2H4 
A) H2CO3 
B) Ba(OH)2 
C) B(OH)3 
D) LiOH 
E) N2H4

Question 11

When the following equation is balanced,what is the lowest whole-number coefficient for SO2?
____ HBrO3(aq)+ ____ SO2(g)+ ____ H2O(l)→ ____ Br2(aq)+ ____ H2SO4(aq)

Accepted Answer

A) 7 
B) 10 
C) 8 
D) 4 
E) 5 
A) 7 
B) 10 
C) 8 
D) 4 
E) 5

Question 12

What volume of 0.330 M Na2CO3 (106 g/mol)solution contains 32.7 of Na2CO3?

Accepted Answer

A) 0.101 L 
B) 1.05 × 104 L 
C) 0.934 L 
D) 1.14 × 103 L 
E) 1.06 L 
A) 0.101 L 
B) 1.05 × 104 L 
C) 0.934 L 
D) 1.14 × 103 L 
E) 1.06 L

Question 13

In a volumetric analysis experiment,a solution of sodium oxalate (Na2C2O4)in acidic solution is titrated with a solution of potassium permanganate (KMnO4)according to the following balanced chemical equation:
2KMnO4(aq)+ 8H2SO4(aq)+ 5Na2C2O4(aq)→ 2MnSO4(aq)+ 8H2O(l)+ 10CO2(g)+ 5Na2SO4(aq)+ K2SO4(aq)
It required 40.0 mL of 0.0335 M KMnO4 to reach the endpoint.What mass of Na2C2O4 was present initially?

Accepted Answer

A) 1.79 g 
B) 0.0718 g 
C) 11.2 g 
D) 0.179 g 
E) 0.448 g 
A) 1.79 g 
B) 0.0718 g 
C) 11.2 g 
D) 0.179 g 
E) 0.448 g

Question 14

What volume of 0.72 M sodium bromide,NaBr,contains 6.5 × 10-4 mol of bromide ions?

Accepted Answer

A) 0.45 mL 
B) 0.46 L 
C) 0.9 mL 
D) 1.1 L 
E) 0.46 mL 
A) 0.45 mL 
B) 0.46 L 
C) 0.9 mL 
D) 1.1 L 
E) 0.46 mL

Question 15

What is the net ionic equation for the acid-base reaction that occurs when acetic acid and sodium hydroxide solutions are mixed?

Accepted Answer

A) HC2H3O2(aq)+ OH-(aq)→ C2H3O2-(aq)+ H2O(l) 
B) H+(aq)+ OH-(aq)→ H2O(l) 
C) H3O+(aq)+ OH-(aq)→ 2H2O(l) 
D) C2H3O2-(aq)+ H+(aq)+ Na+(aq)+ OH-(aq)→ Na+(aq)+ C2H3O2-(aq)+ H2O(l) 
E) HC2H3O2(aq)+ NaOH-(aq)→ NaC2H3O2-(aq)+ H2O(l) 
A) HC2H3O2(aq)+ OH-(aq)→ C2H3O2-(aq)+ H2O(l) 
B) H+(aq)+ OH-(aq)→ H2O(l) 
C) H3O+(aq)+ OH-(aq)→ 2H2O(l) 
D) C2H3O2-(aq)+ H+(aq)+ Na+(aq)+ OH-(aq)→ Na+(aq)+ C2H3O2-(aq)+ H2O(l) 
E) HC2H3O2(aq)+ NaOH-(aq)→ NaC2H3O2-(aq)+ H2O(l)

Question 16

An impure sample of benzoic acid (C6H5COOH,122.12 g/mol)is titrated with 0.9855 M NaOH.A 3.412-g sample requires 24.43 mL of titrant to reach the endpoint.What is the percent by mass of benzoic acid in the sample?
C6H5COOH(aq)+ NaOH(aq)→ NaC6H5COO(aq)+ H2O(l)

Accepted Answer

A) 0.01971 % 
B) 2.407 % 
C) 100 % 
D) 19.71 % 
E) 86.18 % 
A) 0.01971 % 
B) 2.407 % 
C) 100 % 
D) 19.71 % 
E) 86.18 %

Question 17

In order to prepare a standard 1.00 M solution of oxalic acid from H2C2O4 · 2H2O (126.07 g/mol),10.086 g of oxalic acid dihydrate should be dissolved in

Accepted Answer

A) enough water to make 80.0 g of solution. 
B) 69.914 g of water. 
C) 80.0 g of water. 
D) enough water to make 80.0 mL of solution. 
E) 80.0 cm3 of water. 
A) enough water to make 80.0 g of solution. 
B) 69.914 g of water. 
C) 80.0 g of water. 
D) enough water to make 80.0 mL of solution. 
E) 80.0 cm3 of water.

Question 18

What is the net ionic equation for the complete neutralization of phosphoric acid with potassium hydroxide?

Accepted Answer

A) H3PO4(aq)+ 3OH-(aq)→ 3H2O(l)+ PO43-(aq) 
B) H3P(aq)+ 3KOH(aq)→ 3H2O(l)+ K3P(aq) 
C) H+(aq)+ OH-(aq)→ H2O(l) 
D) H3PO4(aq)+ 3KOH(aq)→ 3H2O(l)+ K3PO4(aq) 
E) 3H+(aq)+ 3KOH(aq)→ 3H2O(l)+ 3K+(aq) 
A) H3PO4(aq)+ 3OH-(aq)→ 3H2O(l)+ PO43-(aq) 
B) H3P(aq)+ 3KOH(aq)→ 3H2O(l)+ K3P(aq) 
C) H+(aq)+ OH-(aq)→ H2O(l) 
D) H3PO4(aq)+ 3KOH(aq)→ 3H2O(l)+ K3PO4(aq) 
E) 3H+(aq)+ 3KOH(aq)→ 3H2O(l)+ 3K+(aq)

Question 19

Which of the following compounds is insoluble in water?

Accepted Answer

A) NH4Cl 
B) KCl 
C) CoCl2 
D) PbCl2 
E) LiCl 
A) NH4Cl 
B) KCl 
C) CoCl2 
D) PbCl2 
E) LiCl

Question 20

All of the following are weak electrolytes in aqueous solution except

Accepted Answer

A) nitrous acid. 
B) acetic acid. 
C) nitric acid. 
D) tartaric acid. 
E) citric acid. 
A) nitrous acid. 
B) acetic acid. 
C) nitric acid. 
D) tartaric acid. 
E) citric acid.

Exam 4: Chemical Reactions

Which of the following compounds is insoluble in water?

Which of the following is a weak base in aqueous solution?

Which of the following reactions is an oxidation-reduction reaction?

Which of the following is a weak electrolyte in aqueous solution?

Which of the following compounds is soluble in water?

Calculate the molarity of a solution that contains 14.6 g of NaOH (40.0 g/mol)in 491 mL of solution.

Consider the reaction of sulfur dioxide and water,which is represented by the following equation: 2SO2(g)+ 2H2O(g)→ 2H2S(g)+ 3O2(g) How many moles of electrons are transferred according to the equation that is written?

In order to dilute 71.1 mL of 0.915 M HCl to 0.100 M,the volume of water that must be added is

Which of the following would not be depicted as the individual ions on the reactant side of a complete ionic reaction?

Which of the following is a weak base in aqueous solution?

When the following equation is balanced,what is the lowest whole-number coefficient for SO2? ____ HBrO3(aq)+ ____ SO2(g)+ ____ H2O(l)→ ____ Br2(aq)+ ____ H2SO4(aq)

What volume of 0.330 M Na2CO3 (106 g/mol)solution contains 32.7 of Na2CO3?

What volume of 0.72 M sodium bromide,NaBr,contains 6.5 × 10-4 mol of bromide ions?

What is the net ionic equation for the acid-base reaction that occurs when acetic acid and sodium hydroxide solutions are mixed?

An impure sample of benzoic acid (C6H5COOH,122.12 g/mol)is titrated with 0.9855 M NaOH.A 3.412-g sample requires 24.43 mL of titrant to reach the endpoint.What is the percent by mass of benzoic acid in the sample? C6H5COOH(aq)+ NaOH(aq)→ NaC6H5COO(aq)+ H2O(l)

In order to prepare a standard 1.00 M solution of oxalic acid from H2C2O4 · 2H2O (126.07 g/mol),10.086 g of oxalic acid dihydrate should be dissolved in

What is the net ionic equation for the complete neutralization of phosphoric acid with potassium hydroxide?

Which of the following compounds is insoluble in water?

All of the following are weak electrolytes in aqueous solution except

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Consider the reaction of sulfur dioxide and water,which is represented by the following equation: 2SO₂(g)+ 2H₂O(g)→ 2H₂S(g)+ 3O₂(g) How many moles of electrons are transferred according to the equation that is written?

When the following equation is balanced,what is the lowest whole-number coefficient for SO₂? HBrO₃(aq)+ SO₂(g)+ H₂O(l)→ Br₂(aq)+ H₂SO₄(aq)

What volume of 0.330 M Na₂CO₃ (106 g/mol)solution contains 32.7 of Na₂CO₃?

What volume of 0.72 M sodium bromide,NaBr,contains 6.5 × 10^-4 mol of bromide ions?

An impure sample of benzoic acid (C₆H₅COOH,122.12 g/mol)is titrated with 0.9855 M NaOH.A 3.412-g sample requires 24.43 mL of titrant to reach the endpoint.What is the percent by mass of benzoic acid in the sample? C₆H₅COOH(aq)+ NaOH(aq)→ NaC₆H₅COO(aq)+ H₂O(l)

In order to prepare a standard 1.00 M solution of oxalic acid from H₂C₂O₄ · 2H₂O (126.07 g/mol),10.086 g of oxalic acid dihydrate should be dissolved in