Question 1

What volume (mL)of a concentrated solution of magnesium chloride (9.00 M)must be diluted to 350.mL to make a 2.75 M solution of magnesium chloride?

Accepted Answer

A) 14.1 
B) 1.15 
C) 127 
D) 107 
E) 38.8 
A) 14.1 
B) 1.15 
C) 127 
D) 107 
E) 38.8

Question 2

In which species does nitrogen have the highest oxidation number?

Accepted Answer

A) NaNO3 
B) HNO2 
C) NO2- 
D) NH3 
E) N2 
A) NaNO3 
B) HNO2 
C) NO2- 
D) NH3 
E) N2

Question 3

How many grams of hydrazine N2H4 must be added to a solvent to prepare 375 mL of a solution that is 5.5 M hydrazine?

Accepted Answer

Question 4

A one-hundredfold dilution of an enzymatic buffer solution can be obtained by using ________.

Accepted Answer

A) 1 part sample and 100 parts diluent 
B) 99 parts sample and 1 part diluent 
C) 1 part sample and 99 parts diluent 
D) 100 parts sample and 1 part diluent 
E) 9 parts sample and 1 part diluent 
A) 1 part sample and 100 parts diluent 
B) 99 parts sample and 1 part diluent 
C) 1 part sample and 99 parts diluent 
D) 100 parts sample and 1 part diluent 
E) 9 parts sample and 1 part diluent

Question 5

Which solution has the same number of moles of HCl as 25.0 mL of 0.200 M solution of HCl?

Accepted Answer

A) 12.5 mL of 0.400 M solution of HCl 
B) 25.0 mL of 0.185 M solution of HCl 
C) 45.0 mL of 0.155 M solution of HCl 
D) 50.0 mL of 0.150 M solution of HCl 
E) 100.0 mL of 0.500 M solution of HCl 
A) 12.5 mL of 0.400 M solution of HCl 
B) 25.0 mL of 0.185 M solution of HCl 
C) 45.0 mL of 0.155 M solution of HCl 
D) 50.0 mL of 0.150 M solution of HCl 
E) 100.0 mL of 0.500 M solution of HCl

Question 6

Which of the following reactions will not occur as written?

Accepted Answer

A) Zn (s)+ Pb(NO3)2 (aq)→ Pb (s)+ Zn(NO3)2 (aq) 
B) Mg (s)+ Ca(OH)2 (aq)→ Ca (s)+ Mg(OH)2 (aq) 
C) Sn (s)+ 2AgNO3 (aq)→ 2Ag (s)+ Sn(NO3)2 (aq) 
D) Co (s)+ 2AgCl (aq)→ 2Ag (s)+ CoCl2 (aq) 
E) Co (s)+ 2HI (aq)→ H2 (g)+ CoI2 (aq) 
A) Zn (s)+ Pb(NO3)2 (aq)→ Pb (s)+ Zn(NO3)2 (aq) 
B) Mg (s)+ Ca(OH)2 (aq)→ Ca (s)+ Mg(OH)2 (aq) 
C) Sn (s)+ 2AgNO3 (aq)→ 2Ag (s)+ Sn(NO3)2 (aq) 
D) Co (s)+ 2AgCl (aq)→ 2Ag (s)+ CoCl2 (aq) 
E) Co (s)+ 2HI (aq)→ H2 (g)+ CoI2 (aq)

Question 7

A KCl solution was prepared by dissolving 9.3 g of KCl in sufficient water to give 350 mL of solution. What is the concentration (M)of the newly prepared KCl solution?

Accepted Answer

The answer of A KCl solution was prepared by dissolving...

Question 8

How many grams of an unknown substance with a molar mass of 40.0 are there in 500.0 mL of a 0.175 M solution of the unknown?

Accepted Answer

The answer of How many grams of an unknown substance...

Question 9

Which one of the following compounds is insoluble in water?

Accepted Answer

A) Na2CO3 
B) K2SO4 
C) Fe(NO3)3 
D) ZnS 
E) AgNO3 
A) Na2CO3 
B) K2SO4 
C) Fe(NO3)3 
D) ZnS 
E) AgNO3

Question 10

When aqueous solutions of ________ are mixed,a precipitate forms.

Accepted Answer

A) NiBr2 and AgNO3 
B) NaI and KBr 
C) K2SO4 and CrCl3 
D) KOH and Ba(NO3)2 
E) Li2CO3 and CsI 
A) NiBr2 and AgNO3 
B) NaI and KBr 
C) K2SO4 and CrCl3 
D) KOH and Ba(NO3)2 
E) Li2CO3 and CsI

Question 11

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 12

What volume (mL)of a concentrated solution of sodium hydroxide (6.00 M)must be diluted to 200.0 mL to make a 0.880 M solution of sodium hydroxide?

Accepted Answer

A) 0.0264 
B) 176 
C) 26.4 
D) 29.3 
E) 33.3 
A) 0.0264 
B) 176 
C) 26.4 
D) 29.3 
E) 33.3

Question 13

What volume (mL)of a 5.45 M lead nitrate solution must be diluted to   to make a   solution of lead nitrate?

Accepted Answer

A) 212 
B) 6310 
C) 3170 
D) 0.00936 
E) 0.00471 
A) 212 
B) 6310 
C) 3170 
D) 0.00936 
E) 0.00471

Question 14

What are the respective concentrations (M)of Na+ and SO42- afforded by dissolving 0.500 mol Na2SO4 in water and diluting to 1.33 L?

Accepted Answer

A) 0.665 and 0.665 
B) 0.665 and 1.33 
C) 1.33 and 0.665 
D) 0.376 and 0.752 
E) 0.752 and 0.376 
A) 0.665 and 0.665 
B) 0.665 and 1.33 
C) 1.33 and 0.665 
D) 0.376 and 0.752 
E) 0.752 and 0.376

Question 15

Which ions are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of CoCl2 and AgNO3?

Accepted Answer

A) Co2+ and NO3- 
B) NO3- and Cl- 
C) Co2+ and Ag+ 
D) Cl- 
E) NO3- 
A) Co2+ and NO3- 
B) NO3- and Cl- 
C) Co2+ and Ag+ 
D) Cl- 
E) NO3-

Question 16

How many milliliters of 0.188 M HClO4 solution are needed to neutralize 50.00 mL of 0.0832 M NaOH?

Accepted Answer

A) 0.782 
B) 8.85 × 10-3 
C) 113 
D) 0.0452 
E) 22.1 
A) 0.782 
B) 8.85 × 10-3 
C) 113 
D) 0.0452 
E) 22.1

Question 17

In a titration of 35.00 mL of 0.737 M H2SO4,________ mL of a 0.827 M KOH solution is required for neutralization.

Accepted Answer

A) 35.0 
B) 31.2 
C) 25.8 
D) 62.4 
E) 39.3 
A) 35.0 
B) 31.2 
C) 25.8 
D) 62.4 
E) 39.3

Question 18

What are the respective concentrations (M)of Cu2+ and Cl- afforded by dissolving   CuCl2 in water and diluting to

Accepted Answer

A) 3.36 and 6.73 
B) 0.00336 and 3.36 
C) 0.00336 and 0.00336 
D) 3.36 and 3.36 
E) 0.297 and 0.113 
A) 3.36 and 6.73 
B) 0.00336 and 3.36 
C) 0.00336 and 0.00336 
D) 3.36 and 3.36 
E) 0.297 and 0.113

Exam 4: Reactions in Aqueous Solution

What volume (mL)of a concentrated solution of magnesium chloride (9.00 M)must be diluted to 350.mL to make a 2.75 M solution of magnesium chloride?

In which species does nitrogen have the highest oxidation number?

How many grams of hydrazine N2H4 must be added to a solvent to prepare 375 mL of a solution that is 5.5 M hydrazine?

A one-hundredfold dilution of an enzymatic buffer solution can be obtained by using ________.

Which solution has the same number of moles of HCl as 25.0 mL of 0.200 M solution of HCl?

Which of the following reactions will not occur as written?

A KCl solution was prepared by dissolving 9.3 g of KCl in sufficient water to give 350 mL of solution. What is the concentration (M)of the newly prepared KCl solution?

How many grams of an unknown substance with a molar mass of 40.0 are there in 500.0 mL of a 0.175 M solution of the unknown?

Which one of the following compounds is insoluble in water?

When aqueous solutions of ________ are mixed,a precipitate forms.

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

What volume (mL)of a concentrated solution of sodium hydroxide (6.00 M)must be diluted to 200.0 mL to make a 0.880 M solution of sodium hydroxide?

What volume (mL)of a 5.45 M lead nitrate solution must be diluted to to make a solution of lead nitrate?

What are the respective concentrations (M)of Na+ and SO42- afforded by dissolving 0.500 mol Na2SO4 in water and diluting to 1.33 L?

Which ions are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of CoCl2 and AgNO3?

How many milliliters of 0.188 M HClO4 solution are needed to neutralize 50.00 mL of 0.0832 M NaOH?

In a titration of 35.00 mL of 0.737 M H2SO4,________ mL of a 0.827 M KOH solution is required for neutralization.

What are the respective concentrations (M)of Cu2+ and Cl- afforded by dissolving CuCl2 in water and diluting to

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

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

How many grams of hydrazine N₂H₄ must be added to a solvent to prepare 375 mL of a solution that is 5.5 M hydrazine?

What are the respective concentrations (M)of Na⁺ and SO₄^2-afforded by dissolving 0.500 mol Na₂SO₄in water and diluting to 1.33 L?

Which ions are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of CoCl₂ and AgNO₃?

How many milliliters of 0.188 M HClO₄ solution are needed to neutralize 50.00 mL of 0.0832 M NaOH?

In a titration of 35.00 mL of 0.737 M H₂SO₄,________ mL of a 0.827 M KOH solution is required for neutralization.

What are the respective concentrations (M)of Cu²⁺ and Cl^- afforded by dissolving CuCl₂ in water and diluting to