Question 1

From the activity list included in this problem,which element/ion is the most easily oxidized? 
Activity Series =

Accepted Answer

A) Na 
B) Ca 
C)    
D) Li 
E)    
A) Na 
B) Ca 
C)    
D) Li 
E)

Question 2

The oxidation number of manganese in MnO41- is +7.

Accepted Answer

A) True 
 B)False

Question 3

From the activity list included in this problem,which element/ion will spontaneously react with   ? 
Activity Series =

Accepted Answer

A) Na 
B) Ca 
C)    
D) Li 
E)    
A) Na 
B) Ca 
C)    
D) Li 
E)

Question 4

The oxidation number of Cr in Cr2O7 2- is:

Accepted Answer

A) +2. 
B) -2. 
C) +7. 
D) +6. 
E) none of the above 
A) +2. 
B) -2. 
C) +7. 
D) +6. 
E) none of the above

Question 5

Redox reactions must involve the gain or loss of oxygen atoms.

Accepted Answer

A) True 
 B)False

Question 6

What is the balanced reduction half-reaction for the following unbalanced redox reaction:

Accepted Answer

A) Ca →   + 2   
B)    → Ag + 1   
C) 2   + Ca →   
D)    + 2   → 2Ag 
E) none of the above 
A) Ca →   + 2   
B)    → Ag + 1   
C) 2   + Ca →   
D)    + 2   → 2Ag 
E) none of the above

Question 7

What is the oxidation state of sulfur in SO32-?

Accepted Answer

A) 0 
B) -2 
C) +3 
D) +4 
E) +6 
A) 0 
B) -2 
C) +3 
D) +4 
E) +6

Question 8

Distinguish between a galvanic (voltaic)cell and an electrolytic cell.

Accepted Answer

In a galvanic (voltaic)cell,an electric

Question 9

What is the oxidation state of the underlined atom in the compound: 
CO2 ?

Accepted Answer

A) +1 
B) +2 
C) -2 
D) +4 
E) +6 
A) +1 
B) +2 
C) -2 
D) +4 
E) +6

Question 10

The oxidizing agent typically:

Accepted Answer

A) loses electrons. 
B) gains oxygen. 
C) is the reactant that is reduced. 
D) is oxidized. 
E) none of the above 
A) loses electrons. 
B) gains oxygen. 
C) is the reactant that is reduced. 
D) is oxidized. 
E) none of the above

Question 11

Gold metal is found at the bottom of the activity series of metals since it is the most difficult metal to oxidize.

Accepted Answer

A) True 
 B)False

Question 12

What is the oxidation state of the underlined atom in the reaction:

Accepted Answer

A) 0 
B) +2 
C) -2 
D) +4 
E) -4 
A) 0 
B) +2 
C) -2 
D) +4 
E) -4

Question 13

Which fact about fuel cells is FALSE?

Accepted Answer

A) Fuel cell automobiles are powered by water and the only emission is hydrogen. 
B) Fuel cells are based on the tendency of some elements to gain electrons from other elements. 
C) Fuel cell automobiles are whisper quiet. 
D) Fuel cell automobiles are environmentally friendly. 
E) all of the above 
A) Fuel cell automobiles are powered by water and the only emission is hydrogen. 
B) Fuel cells are based on the tendency of some elements to gain electrons from other elements. 
C) Fuel cell automobiles are whisper quiet. 
D) Fuel cell automobiles are environmentally friendly. 
E) all of the above

Question 14

Most acids dissolve metals by the oxidation of H+ ions to hydrogen gas.

Accepted Answer

A) True 
 B)False

Question 15

Electrons flowing through a wire is an example of electrical current.

Accepted Answer

A) True 
 B)False

Question 16

The oxidation number of P in PO4 3- is:

Accepted Answer

A) -3 
B) -5 
C) +5 
D) +8 
E) none of the above 
A) -3 
B) -5 
C) +5 
D) +8 
E) none of the above

Question 17

From the activity list included in this problem,which element will react with Cu? 
Activity Series =

Accepted Answer

A) Sn 
B) Pb 
C)    
D) Cu 
E) none of the above 
A) Sn 
B) Pb 
C)    
D) Cu 
E) none of the above

Question 18

Which battery system is based on half reactions involving zinc metal and manganese dioxide?

Accepted Answer

A) alkaline batteries 
B) fuel cells 
C) lead-acid storage batteries 
D) dry-cell batteries 
E) none of the above 
A) alkaline batteries 
B) fuel cells 
C) lead-acid storage batteries 
D) dry-cell batteries 
E) none of the above

Question 19

What is the oxidation state of the underlined atom in the compound: 
H2SO4 ?

Accepted Answer

A) +1 
B) +2 
C) -2 
D) +6 
E) +4 
A) +1 
B) +2 
C) -2 
D) +6 
E) +4

Question 20

From the activity list included in this problem,which element/ion is the most difficult to oxidize? 
Activity Series =

Accepted Answer

A) Na 
B) Ca 
C)    
D) Li 
E)    
A) Na 
B) Ca 
C)    
D) Li 
E)

From the activity list included in this problem,which element/ion is the most easily oxidized? Activity Series =

The oxidation number of manganese in MnO₄^1- is +7.

From the activity list included in this problem,which element/ion will spontaneously react with ? Activity Series =

The oxidation number of Cr in Cr₂O₇ ^2-is:

Redox reactions must involve the gain or loss of oxygen atoms.

What is the balanced reduction half-reaction for the following unbalanced redox reaction:

What is the oxidation state of sulfur in SO₃^2-?

Distinguish between a galvanic (voltaic)cell and an electrolytic cell.

What is the oxidation state of the underlined atom in the compound: CO₂ ?

The oxidizing agent typically:

Gold metal is found at the bottom of the activity series of metals since it is the most difficult metal to oxidize.

What is the oxidation state of the underlined atom in the reaction:

Which fact about fuel cells is FALSE?

Most acids dissolve metals by the oxidation of H⁺ ions to hydrogen gas.

Electrons flowing through a wire is an example of electrical current.

The oxidation number of P in PO₄^3- is:

From the activity list included in this problem,which element will react with Cu? Activity Series =

Which battery system is based on half reactions involving zinc metal and manganese dioxide?

What is the oxidation state of the underlined atom in the compound: H₂SO₄ ?

From the activity list included in this problem,which element/ion is the most difficult to oxidize? Activity Series =

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Exam 16: Oxidation and Reduction

From the activity list included in this problem,which element/ion is the most easily oxidized? Activity Series =

The oxidation number of manganese in MnO41- is +7.

From the activity list included in this problem,which element/ion will spontaneously react with ? Activity Series =

The oxidation number of Cr in Cr2O7 2- is:

Redox reactions must involve the gain or loss of oxygen atoms.

What is the balanced reduction half-reaction for the following unbalanced redox reaction:

What is the oxidation state of sulfur in SO32-?

Distinguish between a galvanic (voltaic)cell and an electrolytic cell.

What is the oxidation state of the underlined atom in the compound: CO2 ?

The oxidizing agent typically:

Gold metal is found at the bottom of the activity series of metals since it is the most difficult metal to oxidize.

What is the oxidation state of the underlined atom in the reaction:

Which fact about fuel cells is FALSE?

Most acids dissolve metals by the oxidation of H+ ions to hydrogen gas.

Electrons flowing through a wire is an example of electrical current.

The oxidation number of P in PO4 3- is:

From the activity list included in this problem,which element will react with Cu? Activity Series =

Which battery system is based on half reactions involving zinc metal and manganese dioxide?

What is the oxidation state of the underlined atom in the compound: H2SO4 ?

From the activity list included in this problem,which element/ion is the most difficult to oxidize? Activity Series =

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

The oxidation number of manganese in MnO₄^1- is +7.

The oxidation number of Cr in Cr₂O₇ ^2-is:

What is the oxidation state of sulfur in SO₃^2-?

What is the oxidation state of the underlined atom in the compound: CO₂ ?

Most acids dissolve metals by the oxidation of H⁺ ions to hydrogen gas.

The oxidation number of P in PO₄^3- is:

What is the oxidation state of the underlined atom in the compound: H₂SO₄ ?