Elements

Question #1: The following reaction can be classified as:

2 Ag   +   2 HCl   --->   2 AgCl  +  H2   

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #2: Which of the following statements is true for the following reaction?

2 Ag   +   2 HCl   --->   2 AgCl  +  H2

This is not a redox reaction.
This is a redox reaction.  Ag is oxidized.  H is reduced.
This is a redox reaction.  Ag is reduced.  H is oxidized.
This is a redox reaction.  Cl is oxidized.  Ag is reduced.
This is a redox reaction.  Ag is oxidized.  Cl is reduced.

Question #3:  The following reaction can be classified as:

 Na2CO3  +  heat  --->  Na2O   +   CO2

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #4: Which of the following statements is true for the following reaction?

Na2CO3  +  heat  --->  Na2O   +   CO2

This is not a redox reaction.
This is a redox reaction.  Na is oxidized.  C is reduced.
This is a redox reaction.  C is oxidized.  Na is reduced.
This is a redox reaction.  Na is oxidized.  O is reduced.
This is a redox reaction.  O is oxidized.  Na is reduced.

Question #5:  The following reaction can be classified as:

 CH4   +  2 O2  --->   CO2  +   2 H2O

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #6: Which of the following statements is true for the following reaction?

CH4   +  2 O2  --->   CO2  +   2 H2O

This is not a redox reaction.
This is a redox reaction.  H is oxidized.  C is reduced.
This is a redox reaction.  C is oxidized.  H is reduced.
This is a redox reaction.  C is oxidized.  O is reduced.
This is a redox reaction.  O is oxidized.  C is reduced.

Question #7: The following reaction can be classified as:

2 Fe   +  3 O2  --->   Fe2O3 

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #8: Which of the following statements is true for the following reaction?

2 Fe   +  3 O2  --->   Fe2O3

This is not a redox reaction.
This is a redox reaction.  Fe is oxidized.  O is reduced.
This is a redox reaction.  O is oxidized.  Fe is reduced.
This is a redox reaction.  Fe2O3  is oxidized.  O is reduced.
This is a redox reaction.  O is oxidized.  Fe2O3  is reduced.

Question #9: The following reaction can be classified as:

HCl  +   NaOH  -->    NaCl  +   H2O

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #10: Which of the following statements is true for the following reaction?

HCl  +   NaOH  -->    NaCl  +   H2O

This is not a redox reaction.
This is a redox reaction.  H is oxidized.  Na is reduced.
This is a redox reaction.  O is oxidized.  H is reduced.
This is a redox reaction.  Na  is oxidized.  Cl is reduced.
This is a redox reaction.  Cl is oxidized.  Na  is reduced.

Question #11: The following reaction can be classified as:

Cl2   +  2 NaBr  -->    Br2   +  2 NaCl

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #12: Which of the following statements is true for the following reaction?

Cl2   +  2 NaBr  -->    Br2   +  2 NaCl

This is not a redox reaction.
This is a redox reaction.  Na is oxidized.  Br is reduced.
This is a redox reaction.  Cl is oxidized.  Na is reduced.
This is a redox reaction.  Br is oxidized.  Cl is reduced.
This is a redox reaction.  Cl is oxidized.  Br is reduced.

Question #13: The following reaction can be classified as:

N2  +  3 H2   -->   2 NH3

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #14: Which of the following statements is true for the following reaction?

N2  +  3 H2   -->   2 NH3

This is not a redox reaction.
This is a redox reaction.  N is oxidized.  H is reduced.
This is a redox reaction.  H is oxidized.  N is reduced.
This is a redox reaction.  N is oxidized.  NH3 is reduced.
This is a redox reaction.  NH3 is oxidized.  H is reduced.

Question #15: The following reaction can be classified as:

2 C4H10  +   13 O2   -->   8 CO2  + 10 H2O

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #16: Which of the following statements is true for the following reaction?

2 C4H10  +   13 O2   -->   8 CO2  + 10 H2O

This is not a redox reaction.
This is a redox reaction.  C is oxidized.  H is reduced.
This is a redox reaction.  H is oxidized.  O is reduced.
This is a redox reaction.  O is oxidized.  H is reduced.
This is a redox reaction.  C is oxidized.  O is reduced.

Question #17: The following reaction can be classified as:

2 AgNO3  +  MgBr2  --> 2 AgBr  +   Mg(NO3)2

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #18: Which of the following statements is true for the following reaction?

2 AgNO3  +  MgBr2  --> 2 AgBr  +   Mg(NO3)2

This is not a redox reaction.
This is a redox reaction.  Ag is oxidized.  Br is reduced.
This is a redox reaction.  Mg is oxidized.  Br is reduced.
This is a redox reaction.  Br is oxidized.  Ag is reduced.
This is a redox reaction.  Br is oxidized.  Mg is reduced.

Question #19: The following reaction can be classified as:

Sb2O3  +  3 Fe  -->  2 Sb  +   3 FeO

Single Replacement Reaction
Double Replacement Reaction
Decomposition Reaction Reaction
Combination Reaction
Combustion Reaction

Question #20: Which of the following statements is true for the following reaction?

Sb2O3  +  3 Fe  -->  2 Sb  +   3 FeO

This is not a redox reaction.
This is a redox reaction.  Sb is oxidized.  Fe is reduced.
This is a redox reaction.  Fe is oxidized.  Sb is reduced.
This is a redox reaction.  Sb is oxidized.  O is reduced.
This is a redox reaction.  Fe is oxidized.  O is reduced.

Question #21: The oxidation number of copper in Cu2O is:

+1
+2
+3
-1
-2

Question #22: The oxidation number of copper in CuSO4 is:

+1
+2
+3
-1
-2

Question #23: The oxidation number of sulfur in SO42- is:

+4
+6
+8
-1
-2

Question #24: The oxidation number of sulfur in H2S is:

+4
+6
+8
-1
-2

Question #25: The oxidation number of sulfur in SO32- is:

+4
+6
+8
-1
-2

Question #26: The oxidation number of manganese in KMnO4 is:

+4
+5
+6
+7
+8

Question #27: The oxidation number of nitrogen in NH4+ is:

+1
+2
-1
-2
-3

Question #28: The oxidation number of chromium in K2Cr2O7 is:

+4
+5
+6
+7
+8

Question #29: The oxidation number of chromium in K2CrO4 is:

+4
+5
+6
+7
+8

Question #30: The oxidation number of carbon in CO2 is:

+4
+5
+6
+7
+8