Question 1

Which of the following is an example of a compound that is very soluble in water but that is essentially nonconductive?

Accepted Answer

A)  Sucrose 
B)  Calcium chloride 
C)  Barium hydroxide 
D)  Sulfuric acid 
E)  Sodium bromide 
A)  Sucrose 
B)  Calcium chloride 
C)  Barium hydroxide 
D)  Sulfuric acid 
E)  Sodium bromide A

Question 2

The balanced chemical equation for the reaction when molten iron reacts with water to form ferrous ions and hydrogen gas is:

Accepted Answer

A)  2Fe(l) + 2H2O(l) → Fe2+(aq) + 3OH-(aq) + 2H2(g) 
B)  Fe(l) + 2H2O(l) → Fe2+(aq) + H2(g) 
C)  2Fe(l) + H2O(l) → Fe2+(aq) + 2H2(g) 
D)  Fe(l) + 2H2O(l) → Fe2+(aq) + 2OH- (aq) + 2H2(g) 
E)  Fe(l) + 2H2O(l) → Fe2+(aq) + 2OH- (aq) + H2(g) 
A)  2Fe(l) + 2H2O(l) → Fe2+(aq) + 3OH-(aq) + 2H2(g) 
B)  Fe(l) + 2H2O(l) → Fe2+(aq) + H2(g) 
C)  2Fe(l) + H2O(l) → Fe2+(aq) + 2H2(g) 
D)  Fe(l) + 2H2O(l) → Fe2+(aq) + 2OH- (aq) + 2H2(g) 
E)  Fe(l) + 2H2O(l) → Fe2+(aq) + 2OH- (aq) + H2(g) E

Question 3

Which of the following salts is insoluble in water?

Accepted Answer

A)  (NH4)2SO4 
B)  (NH4)3PO4 
C)  LiCl 
D)  MgSO4 
E)  Ba(OH)2 
A)  (NH4)2SO4 
B)  (NH4)3PO4 
C)  LiCl 
D)  MgSO4 
E)  Ba(OH)2 B

Question 4

What is the pH of a 3.0 × 10−5 M aqueous solution of H2SO4?

Accepted Answer

A)  4.2 
B)  2.4 
C)  3.0 
D)  0.3 
E)  -0.3 
A)  4.2 
B)  2.4 
C)  3.0 
D)  0.3 
E)  -0.3

Question 5

What are the biological effects of acid rain?

Accepted Answer

Acid rain decreases the pH of water in l

Question 6

The methodology that combines chemical reactions and stoichiometric calculations to determine the amounts or concentrations of a substance present in a sample is called _____.

Accepted Answer

quantitati

Question 7

Based on the activity series, cobalt can reduce the salts of _____.

Accepted Answer

A)  chromium 
B)  cadmium 
C)  calcium 
D)  copper 
E)  iron 
A)  chromium 
B)  cadmium 
C)  calcium 
D)  copper 
E)  iron

Question 8

In the reaction of barium chloride with sodium sulfate, SO42- acts as a spectator ion.

Accepted Answer

A) True 
 B)False

Question 9

Given: HCOOH+ KOH$\rightarrow$HCOO−K+ + H2O What volume of 0.105 M KOH must be added to 125 mL of a solution containing 6.20 × 10−5 g of HCOOH to ensure that formation of the HCOO−K+ is complete?

Accepted Answer

A)  18.3 $\mu$L 
B)  6.28 $\mu$L 
C)  125 $\mu$L 
D)  12.8 $\mu$L 
E)  10.5 $\mu$L 
A)  18.3 $\mu$L 
B)  6.28 $\mu$L 
C)  125 $\mu$L 
D)  12.8 $\mu$L 
E)  10.5 $\mu$L

Question 10

_____ is a chemical equation that shows which ions and molecules are hydrated and which are present in other forms and phases.

Accepted Answer

Complete i

Question 11

Metal objects suffer damage from acid rain through oxidation-reduction reactions.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is the net ionic equation for the reaction between the aqueous solutions of magnesium sulfate and sodium carbonate?

Accepted Answer

A)  MgSO4(aq) + Na2CO3(aq) → MgCO3(s) + Na2SO4(s) 
B)  MgSO4(aq) + Na2CO3(aq) → MgCO3(s) + Na+(aq) + SO42-(aq) 
C)  Na+(aq) + SO42-(aq) → Na2SO4(s) 
D)  Mg2+(aq) + CO32-(aq)→ MgCO3(s) 
E)  Mg2+(aq) + SO42-(aq) + Na+(aq) + CO32-(aq) → MgCO3(s) + Na+(aq) + SO42- (aq) 
A)  MgSO4(aq) + Na2CO3(aq) → MgCO3(s) + Na2SO4(s) 
B)  MgSO4(aq) + Na2CO3(aq) → MgCO3(s) + Na+(aq) + SO42-(aq) 
C)  Na+(aq) + SO42-(aq) → Na2SO4(s) 
D)  Mg2+(aq) + CO32-(aq)→ MgCO3(s) 
E)  Mg2+(aq) + SO42-(aq) + Na+(aq) + CO32-(aq) → MgCO3(s) + Na+(aq) + SO42- (aq)

Question 13

The metals at the top of the activity series, which have the greatest tendency to be oxidized are called _____.

Accepted Answer

The answer of The metals at the top of the...

Question 14

Calcium hydroxide is insoluble in water.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is a triprotic acid?

Accepted Answer

A)  Benzoic acid 
B)  Phosphoric acid 
C)  Formic acid 
D)  Nitric acid 
E)  Acetic acid 
A)  Benzoic acid 
B)  Phosphoric acid 
C)  Formic acid 
D)  Nitric acid 
E)  Acetic acid

Question 16

When table salt is added to an aqueous solution of silver nitrate, the exchange reaction yields a precipitate of silver chloride.

Accepted Answer

A) True 
 B)False

Question 17

The _____ is a precipitation that is dramatically more acidic because of human activities and has significant consequences for all the living organisms.

Accepted Answer

The answer of The _____ is a precipitation that is...

Question 18

The white precipitate formed when lead acetate is reacted with an aqueous solution of ammonium iodide is _____.

Accepted Answer

The answer of The white precipitate formed when lead acetate...

Question 19

Given: HCOOH + KOH$\rightarrow$HCOO−K+ + H2O What mass of HCOO−K+ is formed when 383 mL of 0.250 M HCOOH is mixed with 885 mL of 0.524 M KOH?

Accepted Answer

A)  885 g 
B)  48.5 g 
C)  8.05 g 
D)  1.06 g 
E)  32.0 g 
A)  885 g 
B)  48.5 g 
C)  8.05 g 
D)  1.06 g 
E)  32.0 g

Question 20

What is an electrolyte?

Accepted Answer

A)  It is the term used to describe acids that do not dissolve in water. 
B)  It is the term used to describe bases that do not dissolve in water. 
C)  It is any compound that can form carbon dioxide when it reacts with water. 
D)  It is any compound that can form ions when it dissolves in water. 
E)  It is any compound that can act as a solvent for water. 
A)  It is the term used to describe acids that do not dissolve in water. 
B)  It is the term used to describe bases that do not dissolve in water. 
C)  It is any compound that can form carbon dioxide when it reacts with water. 
D)  It is any compound that can form ions when it dissolves in water. 
E)  It is any compound that can act as a solvent for water.

Exam 4: Reactions in Aqueous Solution

Which of the following is an example of a compound that is very soluble in water but that is essentially nonconductive?

The balanced chemical equation for the reaction when molten iron reacts with water to form ferrous ions and hydrogen gas is:

Which of the following salts is insoluble in water?

What is the pH of a 3.0 × 10−5 M aqueous solution of H2SO4?

What are the biological effects of acid rain?

The methodology that combines chemical reactions and stoichiometric calculations to determine the amounts or concentrations of a substance present in a sample is called _____.

Based on the activity series, cobalt can reduce the salts of _____.

In the reaction of barium chloride with sodium sulfate, SO42- acts as a spectator ion.

Given: HCOOH+ KOH →\rightarrow→ HCOO−K+ + H2O What volume of 0.105 M KOH must be added to 125 mL of a solution containing 6.20 × 10−5 g of HCOOH to ensure that formation of the HCOO−K+ is complete?

_____ is a chemical equation that shows which ions and molecules are hydrated and which are present in other forms and phases.

Metal objects suffer damage from acid rain through oxidation-reduction reactions.

Which of the following is the net ionic equation for the reaction between the aqueous solutions of magnesium sulfate and sodium carbonate?

The metals at the top of the activity series, which have the greatest tendency to be oxidized are called _____.

Calcium hydroxide is insoluble in water.

Which of the following is a triprotic acid?

When table salt is added to an aqueous solution of silver nitrate, the exchange reaction yields a precipitate of silver chloride.

The _____ is a precipitation that is dramatically more acidic because of human activities and has significant consequences for all the living organisms.

The white precipitate formed when lead acetate is reacted with an aqueous solution of ammonium iodide is _____.

Given: HCOOH + KOH →\rightarrow→ HCOO−K+ + H2O What mass of HCOO−K+ is formed when 383 mL of 0.250 M HCOOH is mixed with 885 mL of 0.524 M KOH?

What is an electrolyte?

Introduction to Chemistry

Molecules, Ions, and Chemical Formulas

Chemical Reactions

Energy Changes in Chemical Reactions

The Structure of Atoms

The Periodic Table and Periodic Trends

Ionic Versus Covalent Bonding

Molecular Geometry and Covalent Bonding Models

Gases

Liquids

Solids

Solutions

Chemical Kinetics

Chemical Equilibrium

Aqueous Acidbase Equilibriums

Solubility and Complexation Equilibriums

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Periodic Trends and the S-Block Elements

The P-Block Elements

The D-Block Elements

Organic Compounds

Filters

What is the pH of a 3.0 × 10⁻⁵ M aqueous solution of H₂SO₄?

In the reaction of barium chloride with sodium sulfate, SO₄²^- acts as a spectator ion.

Given: HCOOH+ KOH $\rightarrow$ HCOO⁻K⁺ + H₂O What volume of 0.105 M KOH must be added to 125 mL of a solution containing 6.20 × 10⁻⁵ g of HCOOH to ensure that formation of the HCOO⁻K⁺is complete?

Given: HCOOH + KOH $\rightarrow$ HCOO⁻K⁺ + H₂O What mass of HCOO⁻K⁺is formed when 383 mL of 0.250 M HCOOH is mixed with 885 mL of 0.524 M KOH?