Question 1

Identify the oxidizing agent. I₂ + 6 H₂O + 5 CL₂ → 2HIO₃ + 10 HCl

Accepted Answer

A)  I₂ 
B)  H₂O 
C)  CL₂ 
D)  the oxygen in water 
A)  I₂ 
B)  H₂O 
C)  CL₂ 
D)  the oxygen in water C

Question 2

What is reduction?

Accepted Answer

A)  loss of electrons 
B)  increase in oxidation number 
C)  gain of electrons 
D)  two of the above 
A)  loss of electrons 
B)  increase in oxidation number 
C)  gain of electrons 
D)  two of the above C

Question 3

Match each compound with its corresponding chlorine oxidation state.
-sodium chlorite

Accepted Answer

A) +3 
B) +5 
C) -1 
D) +1 
E) +7 
A) +3 
B) +5 
C) -1 
D) +1 
E) +7 A

Question 4

All four halogens, F, Cl, Br and I, are diatomic in their free state.

Accepted Answer

A) True 
 B)False

Question 5

Which atom(s) has a more positive oxidation state on the product side than the reactant side? Fe2O₃ + 3CO → 2Fe + 3CO₂

Accepted Answer

A)  iron 
B)  oxygen 
C)  carbon 
D)  carbon and iron 
A)  iron 
B)  oxygen 
C)  carbon 
D)  carbon and iron

Question 6

Identify the oxidation-reduction equation.

Accepted Answer

A)  NaOH + HCl → NaCl + H₂O 
B)  AgNO₃ + NaCl → AgCl + NaNO₃ 
C)  CH₄ + 2 O₂ → CO₂ + 2 H₂O 
D)  CaO + CO₂ → CaCO₃ 
A)  NaOH + HCl → NaCl + H₂O 
B)  AgNO₃ + NaCl → AgCl + NaNO₃ 
C)  CH₄ + 2 O₂ → CO₂ + 2 H₂O 
D)  CaO + CO₂ → CaCO₃

Question 7

Match each element with its most likely oxidation state.
-fluorine

Accepted Answer

A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3 
A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3

Question 8

A fuel cell is essentially a battery which uses the following reaction to produce electricity. What is happening at the cathode of such a fuel cell? 2H₂ + O₂ → 2H₂O

Accepted Answer

A)  Hydrogen is being oxidized. 
B)  Oxygen is being oxidized. 
C)  Nothing at all is happening there. 
D)  Oxygen is being reduced. 
A)  Hydrogen is being oxidized. 
B)  Oxygen is being oxidized. 
C)  Nothing at all is happening there. 
D)  Oxygen is being reduced.

Question 9

A spontaneous electrochemical cell is called a galvanic cell.

Accepted Answer

A) True 
 B)False

Question 10

Identify the reducing agent in the following chemical process. Cu + 2AgCl → CuCl2 + 2Ag

Accepted Answer

A)  Ag 
B)  Ag+ 
C)  Cl- 
D)  Cu 
A)  Ag 
B)  Ag+ 
C)  Cl- 
D)  Cu

Question 11

Which of the following is most easily oxidized?

Accepted Answer

A)  Ni 
B)  Pb 
C)  Li 
D)  Cr 
A)  Ni 
B)  Pb 
C)  Li 
D)  Cr

Question 12

Which of the following is the most easily reduced?

Accepted Answer

A)  MN₂+ 
B)  Fe2+ 
C)  ZN₂+ 
D)  Cu2+ 
A)  MN₂+ 
B)  Fe2+ 
C)  ZN₂+ 
D)  Cu2+

Question 13

The lowest oxidation state sulfur can have is in the sulfite form.

Accepted Answer

A) True 
 B)False

Question 14

Identify the element that was oxidized. H₂O + CO₂ → H₂CO₃

Accepted Answer

A)  carbon 
B)  oxygen 
C)  hydrogen 
D)  None of the elements were oxidized. 
A)  carbon 
B)  oxygen 
C)  hydrogen 
D)  None of the elements were oxidized.

Question 15

Which of the following elements may have an oxidation number other than +2?

Accepted Answer

A)  magnesium 
B)  calcium 
C)  barium 
D)  iron 
A)  magnesium 
B)  calcium 
C)  barium 
D)  iron

Question 16

Match each compound with its corresponding chlorine oxidation state.
-sodium perchlorate

Accepted Answer

A) +3 
B) +5 
C) -1 
D) +1 
E) +7 
A) +3 
B) +5 
C) -1 
D) +1 
E) +7

Question 17

In a chemical bond, which atom gets ownership the shared electrons?

Accepted Answer

A)  the larger element 
B)  the smaller element 
C)  the more electronegative element 
D)  the most electropositive element 
A)  the larger element 
B)  the smaller element 
C)  the more electronegative element 
D)  the most electropositive element

Question 18

Identify the oxidizing agent in the following chemical process. Fe + Cu(NO₃)2 → Fe(NO₃)2 + Cu

Accepted Answer

A)  Fe 
B)  Cu+2 
C)  NO₃- 
D)  Cu 
A)  Fe 
B)  Cu+2 
C)  NO₃- 
D)  Cu

Question 19

Match each cation with its corresponding number of electrons.
-aluminum ion

Accepted Answer

A) 54 
B) 2 
C) 10 
D) 18 
A) 54 
B) 2 
C) 10 
D) 18

Question 20

Consult the EMF activity series and predict which of the following changes will occur if an iron nail is placed in an aqueous solution containing the (SN₂+) ion.

Accepted Answer

A)  Nothing at all will happen (no reaction). 
B)  Tin will be further oxidized. 
C)  Iron will be reduced. 
D)  Iron will be oxidized. 
A)  Nothing at all will happen (no reaction). 
B)  Tin will be further oxidized. 
C)  Iron will be reduced. 
D)  Iron will be oxidized.

Identify the oxidizing agent. I₂ + 6 H₂O + 5 CL₂ → 2HIO₃ + 10 HCl

What is reduction?

Match each compound with its corresponding chlorine oxidation state. -sodium chlorite

All four halogens, F, Cl, Br and I, are diatomic in their free state.

Which atom(s) has a more positive oxidation state on the product side than the reactant side? Fe₂O₃ + 3CO → 2Fe + 3CO₂

Identify the oxidation-reduction equation.

Match each element with its most likely oxidation state. -fluorine

A fuel cell is essentially a battery which uses the following reaction to produce electricity. What is happening at the cathode of such a fuel cell? 2H₂ + O₂ → 2H₂O

A spontaneous electrochemical cell is called a galvanic cell.

Identify the reducing agent in the following chemical process. Cu + 2AgCl → CuCl₂ + 2Ag

Which of the following is most easily oxidized?

Which of the following is the most easily reduced?

The lowest oxidation state sulfur can have is in the sulfite form.

Identify the element that was oxidized. H₂O + CO₂ → H₂CO₃

Which of the following elements may have an oxidation number other than +2?

Match each compound with its corresponding chlorine oxidation state. -sodium perchlorate

In a chemical bond, which atom gets ownership the shared electrons?

Identify the oxidizing agent in the following chemical process. Fe + Cu(NO₃)2 → Fe(NO₃)2 + Cu

Match each cation with its corresponding number of electrons. -aluminum ion

Consult the EMF activity series and predict which of the following changes will occur if an iron nail is placed in an aqueous solution containing the (SN₂+) ion.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 10: Electron Transfer in Chemical Reactions

Identify the oxidizing agent. I₂ + 6 H₂O + 5 CL₂ → 2HIO₃ + 10 HCl

What is reduction?

Match each compound with its corresponding chlorine oxidation state. -sodium chlorite

All four halogens, F, Cl, Br and I, are diatomic in their free state.

Which atom(s) has a more positive oxidation state on the product side than the reactant side? Fe2O₃ + 3CO → 2Fe + 3CO₂

Identify the oxidation-reduction equation.

Match each element with its most likely oxidation state. -fluorine

A fuel cell is essentially a battery which uses the following reaction to produce electricity. What is happening at the cathode of such a fuel cell? 2H₂ + O₂ → 2H₂O

A spontaneous electrochemical cell is called a galvanic cell.

Identify the reducing agent in the following chemical process. Cu + 2AgCl → CuCl2 + 2Ag

Which of the following is most easily oxidized?

Which of the following is the most easily reduced?

The lowest oxidation state sulfur can have is in the sulfite form.

Identify the element that was oxidized. H₂O + CO₂ → H₂CO₃

Which of the following elements may have an oxidation number other than +2?

Match each compound with its corresponding chlorine oxidation state. -sodium perchlorate

In a chemical bond, which atom gets ownership the shared electrons?

Identify the oxidizing agent in the following chemical process. Fe + Cu(NO₃)2 → Fe(NO₃)2 + Cu

Match each cation with its corresponding number of electrons. -aluminum ion

Consult the EMF activity series and predict which of the following changes will occur if an iron nail is placed in an aqueous solution containing the (SN₂+) ion.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Which atom(s) has a more positive oxidation state on the product side than the reactant side? Fe₂O₃ + 3CO → 2Fe + 3CO₂

Identify the reducing agent in the following chemical process. Cu + 2AgCl → CuCl₂ + 2Ag