Question 1

How many grams of H3PO4 are in 265 mL of a 1.50 M solution of H3PO4?

Accepted Answer

Question 2

A tenfold dilution of a sample solution can be obtained by taking .

Accepted Answer

A)  10 parts sample and 1 part solvent 
B)  99 parts sample and 1 part solvent 
C)  9 parts sample and 1 part solvent 
D)  1 part sample and 10 parts solvent 
E)  1 part sample and 9 parts solvent 
A)  10 parts sample and 1 part solvent 
B)  99 parts sample and 1 part solvent 
C)  9 parts sample and 1 part solvent 
D)  1 part sample and 10 parts solvent 
E)  1 part sample and 9 parts solvent

Question 3

The total concentration of ions in a 0.250 M solution of HCl is .

Accepted Answer

A)  0.250 M 
B)  0.500 M 
C)  0.125 M 
D)  essentially zero. 
E)  0.750 M 
A)  0.250 M 
B)  0.500 M 
C)  0.125 M 
D)  essentially zero. 
E)  0.750 M

Question 4

The reaction between strontium hydroxide and chloric acid produces .

Accepted Answer

A)  two molecular compounds 
B)  two strong electrolytes 
C)  a molecular compound and a weak electrolyte 
D)  a molecular compound and a strong electrolyte 
E)  two weak electrolytes 
A)  two molecular compounds 
B)  two strong electrolytes 
C)  a molecular compound and a weak electrolyte 
D)  a molecular compound and a strong electrolyte 
E)  two weak electrolytes

Question 5

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

Question 6

The balanced net ionic equation for precipitation of CaCO3 when aqueous solutions of Na2CO3 and CaCl2 are mixed is .

Accepted Answer

A)  Na+ (aq) + Cl- (aq) - NaCl (aq) 
B)  2Na+ (aq) + CO32-  (aq) -Na2CO3 (aq) 
C)  Ca2+ (aq) + CO32- (aq) - CaCO3 (s) 
D)  Na2CO3 (aq) + CaCl2 (aq) - 2NaCl (aq) + CaCO3 (s) 
E)  2Na+ (aq) + 2Cl- (aq) - 2NaCl (aq) 
A)  Na+ (aq) + Cl- (aq) - NaCl (aq) 
B)  2Na+ (aq) + CO32-  (aq) -Na2CO3 (aq) 
C)  Ca2+ (aq) + CO32- (aq) - CaCO3 (s) 
D)  Na2CO3 (aq) + CaCl2 (aq) - 2NaCl (aq) + CaCO3 (s) 
E)  2Na+ (aq) + 2Cl- (aq) - 2NaCl (aq)

Question 7

In which species does sulfur have the highest oxidation number?

Accepted Answer

A)  S8 (elemental form of sulfur) 
B)  H2SO3 
C)  K2SO4 
D)  SO2 
E)  H2S 
A)  S8 (elemental form of sulfur) 
B)  H2SO3 
C)  K2SO4 
D)  SO2 
E)  H2S

How many grams of H₃PO₄are in 265 mL of a 1.50 M solution of H₃PO₄?

A tenfold dilution of a sample solution can be obtained by taking .

The total concentration of ions in a 0.250 M solution of HCl is .

The reaction between strontium hydroxide and chloric acid produces .

What are the respective concentrations (M) of Na⁺and SO₄²^-afforded by dissolving 0.500 mol Na₂SO₄in water and diluting to 1.33 L?

The balanced net ionic equation for precipitation of CaCO₃when aqueous solutions of Na₂CO₃ and CaCl₂are mixed is .

In which species does sulfur have the highest oxidation number?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

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Exam 4: Aqueous Reactions and Solution Stoichiometry

How many grams of H3PO4 are in 265 mL of a 1.50 M solution of H3PO4?

A tenfold dilution of a sample solution can be obtained by taking .

The total concentration of ions in a 0.250 M solution of HCl is .

The reaction between strontium hydroxide and chloric acid produces .

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?

The balanced net ionic equation for precipitation of CaCO3 when aqueous solutions of Na2CO3 and CaCl2 are mixed is .

In which species does sulfur have the highest oxidation number?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

How many grams of H₃PO₄are in 265 mL of a 1.50 M solution of H₃PO₄?

What are the respective concentrations (M) of Na⁺and SO₄²^-afforded by dissolving 0.500 mol Na₂SO₄in water and diluting to 1.33 L?

The balanced net ionic equation for precipitation of CaCO₃when aqueous solutions of Na₂CO₃ and CaCl₂are mixed is .