Question 1

Which of the following are strong electrolytes? HCl
HC2H3O2NH3
KCl

Accepted Answer

A) HCl, KCl 
B) HCl, NH3, KCl 
C) HCl, HC2H3O2, NH3, KCl 
D) HCl, HC2H3O2, KCl 
E) HC2H3O2, KCl 
A) HCl, KCl 
B) HCl, NH3, KCl 
C) HCl, HC2H3O2, NH3, KCl 
D) HCl, HC2H3O2, KCl 
E) HC2H3O2, KCl

Question 2

The compound HClO4 is a weak acid.

Accepted Answer

A) True 
 B)False

Question 3

Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO42- , CO32-, PO43-, OH-, or S2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compound is __________.

Accepted Answer

A) Pb(NO3)2 
B) (NH4)2S 
C) KBr 
D) Li2CO3 
E) AgNO3 
A) Pb(NO3)2 
B) (NH4)2S 
C) KBr 
D) Li2CO3 
E) AgNO3

Question 4

How many moles of BaCl2 are formed in the neutralization of 393 mL of 0.171 M Ba(OH)2 with aqueous HCl?

Accepted Answer

Question 5

How many grams of NaOH (MW = 40.0)are there in 500.0 mL of a 0.225 M NaOH solution?

Accepted Answer

A) 0.00219 
B) 114 
C) 14.0 
D) 4.50 
E) 0.113 
A) 0.00219 
B) 114 
C) 14.0 
D) 4.50 
E) 0.113

Question 6

A strong electrolyte is one that __________ completely in solution.

Accepted Answer

A) reacts 
B) associates 
C) disappears 
D) ionizes 
A) reacts 
B) associates 
C) disappears 
D) ionizes

Question 7

Which one of the following is not true concerning 2.00 L of 0.100 M solution of Ca3(PO4)2?

Accepted Answer

A) This solution contains 0.200 mol of Ca3(PO4)2. 
B) This solution contains 0.800 mol of oxygen atoms. 
C) 1.00 L of this solution is required to furnish 0.300 mol of Ca2+ ions. 
D) There are 6.02 × 1022 phosphorus atoms in 500.0 mL of this solution. 
E) This solution contains 6.67 × 10-2 mol of Ca2+. 
A) This solution contains 0.200 mol of Ca3(PO4)2. 
B) This solution contains 0.800 mol of oxygen atoms. 
C) 1.00 L of this solution is required to furnish 0.300 mol of Ca2+ ions. 
D) There are 6.02 × 1022 phosphorus atoms in 500.0 mL of this solution. 
E) This solution contains 6.67 × 10-2 mol of Ca2+.

Question 8

What is aqua regia?

Accepted Answer

a 3:1 mixture of con

Question 9

Based on the activity series, which one of the reactions below will occur?

Accepted Answer

A) Zn (s)+ MnI2 (aq)→ ZnI2 (aq)+ Mn (s) 
B) SnCl2 (aq)+ Cu (s)→ Sn (s)+ CuCl2 (aq) 
C) 2AgNO3 (aq)+ Pb (s)→ 2Ag (s)+ Pb(NO3)2 (aq) 
D) 3Hg (l)+ 2Cr(NO3)3 (aq)→ 3Hg(NO3)2 + 2Cr (s) 
E) 3FeBr2 (aq)+ 2Au (s)→ 3Fe (s)+ 2AuBr3 (aq) 
A) Zn (s)+ MnI2 (aq)→ ZnI2 (aq)+ Mn (s) 
B) SnCl2 (aq)+ Cu (s)→ Sn (s)+ CuCl2 (aq) 
C) 2AgNO3 (aq)+ Pb (s)→ 2Ag (s)+ Pb(NO3)2 (aq) 
D) 3Hg (l)+ 2Cr(NO3)3 (aq)→ 3Hg(NO3)2 + 2Cr (s) 
E) 3FeBr2 (aq)+ 2Au (s)→ 3Fe (s)+ 2AuBr3 (aq)

Question 10

Sodium does not occur in nature as Na (s)because __________.

Accepted Answer

A) it is easily reduced to Na- 
B) it is easily oxidized to Na+ 
C) it reacts with water with great difficulty 
D) it is easily replaced by silver in its ores 
E) it undergoes a disproportionation reaction to Na- and Na+ 
A) it is easily reduced to Na- 
B) it is easily oxidized to Na+ 
C) it reacts with water with great difficulty 
D) it is easily replaced by silver in its ores 
E) it undergoes a disproportionation reaction to Na- and Na+

Question 11

What volume (mL)of 7.48 × 10-2 M phosphoric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?

Accepted Answer

A) 125 
B) 375 
C) 750 
D) 188 
E) 75.0 
A) 125 
B) 375 
C) 750 
D) 188 
E) 75.0

Question 12

There are __________ mol of bromide ions in 0.500 L of a 0.100 M solution of AlBr3.

Accepted Answer

A) 0.0500 
B) 0.450 
C) 0.150 
D) 0.167 
E) 0.500 
A) 0.0500 
B) 0.450 
C) 0.150 
D) 0.167 
E) 0.500

Question 13

What volume (mL)of 7.48 × 10-2 M perchloric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?

Accepted Answer

A) 125 
B) 8.60 
C) 188 
D) 750 
E) 375 
A) 125 
B) 8.60 
C) 188 
D) 750 
E) 375

Question 14

Which of these metals will be oxidized by the ions of aluminum?

Accepted Answer

A) magnesium 
B) zinc 
C) chromium 
D) iron 
E) nickel 
A) magnesium 
B) zinc 
C) chromium 
D) iron 
E) nickel

Question 15

The total concentration of ions in a 0.625 M solution of HCl is __________.

Accepted Answer

A) 0 
B) 0.500 M 
C) 0.625 M 
D) 1.25 M 
E) 1.50 M 
A) 0 
B) 0.500 M 
C) 0.625 M 
D) 1.25 M 
E) 1.50 M

Question 16

What are the respective concentrations (M)of Mg+2 and C2H3O2- afforded by dissolving 0.600 mol Mg(C2H3O2)2 in water and diluting to 135 mL?

Accepted Answer

A) 0.444 and 0.889 
B) 0.0444 and 0.0889 
C) 0..889 and 0.444 
D) 0.444 and 0.444 
E) 4.44 and 8.89 
A) 0.444 and 0.889 
B) 0.0444 and 0.0889 
C) 0..889 and 0.444 
D) 0.444 and 0.444 
E) 4.44 and 8.89

Question 17

How many moles of Na+ are present in 343 mL of a 1.27 M solution of Na2SO4?

Accepted Answer

A) 0.436 
B) 0.871 
C) 1.31 
D) 3.70 
E) 11.1 
A) 0.436 
B) 0.871 
C) 1.31 
D) 3.70 
E) 11.1

Question 18

Ca(OH)2 is a strong base.

Accepted Answer

A) True 
 B)False

Question 19

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.

Accepted Answer

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

Question 20

How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 1.0 M CH3OH?

Accepted Answer

A) 0.15 
B) 430 
C) 2.4 
D) 4.8 
E) 4.3 
A) 0.15 
B) 430 
C) 2.4 
D) 4.8 
E) 4.3

Exam 4: Aqueous Reactions and Solution Stoichiometry

Which of the following are strong electrolytes? HCl HC2H3O2NH3 KCl

The compound HClO4 is a weak acid.

Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO42- , CO32-, PO43-, OH-, or S2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compound is __________.

How many moles of BaCl2 are formed in the neutralization of 393 mL of 0.171 M Ba(OH)2 with aqueous HCl?

How many grams of NaOH (MW = 40.0)are there in 500.0 mL of a 0.225 M NaOH solution?

A strong electrolyte is one that __________ completely in solution.

Which one of the following is not true concerning 2.00 L of 0.100 M solution of Ca3(PO4)2?

What is aqua regia?

Based on the activity series, which one of the reactions below will occur?

Sodium does not occur in nature as Na (s)because __________.

What volume (mL)of 7.48 × 10-2 M phosphoric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?

There are __________ mol of bromide ions in 0.500 L of a 0.100 M solution of AlBr3.

What volume (mL)of 7.48 × 10-2 M perchloric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?

Which of these metals will be oxidized by the ions of aluminum?

The total concentration of ions in a 0.625 M solution of HCl is __________.

What are the respective concentrations (M)of Mg+2 and C2H3O2- afforded by dissolving 0.600 mol Mg(C2H3O2)2 in water and diluting to 135 mL?

How many moles of Na+ are present in 343 mL of a 1.27 M solution of Na2SO4?

Ca(OH)2 is a strong base.

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.

How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 1.0 M CH3OH?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Which of the following are strong electrolytes? HCl HC₂H₃O₂NH₃ KCl

The compound HClO₄ is a weak acid.

Aqueous solutions of a compound did not form precipitates with Cl^-, Br^-, I^-, SO₄^2- , CO₃^2-, PO₄^3-, OH^-, or S^2-. This highly water-soluble compound produced the foul-smelling gas H₂S when the solution was acidified. This compound is __________.

How many moles of BaCl₂ are formed in the neutralization of 393 mL of 0.171 M Ba(OH)₂ with aqueous HCl?

Which one of the following is not true concerning 2.00 L of 0.100 M solution of Ca₃(PO₄)₂?

What volume (mL)of 7.48 × 10^-2 M phosphoric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?

There are __________ mol of bromide ions in 0.500 L of a 0.100 M solution of AlBr₃.

What volume (mL)of 7.48 × 10^-2 M perchloric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?

What are the respective concentrations (M)of Mg⁺² and C₂H₃O₂^- afforded by dissolving 0.600 mol Mg(C₂H₃O₂)₂in water and diluting to 135 mL?

How many moles of Na⁺ are present in 343 mL of a 1.27 M solution of Na₂SO₄?

Ca(OH)₂ is a strong base.

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.

How many grams of CH₃OH must be added to water to prepare 150 mL of a solution that is 1.0 M CH₃OH?