Question : 61.              Consider the reaction, N2(g) + 2O2(g) ? 2NO2(g) The molecular : 1335444

 

 

61.              Consider the reaction, N2(g) + 2O2(g) ? 2NO2(g)

The molecular image represents a mixture of N2(g) and O2(g) just before reaction occurs.

What is the limiting reactant and how much of the excess reactant remains after the reaction is complete?   The image contains 3 N2 molecules and 9 O2 molecules.

A)N2(g), 6 O2(g)D)O2(g), 2 N2(g)

B)O2(g), 1 N2(g)E)N2(g), 7 O2(g)

C)N2(g), 3 O2(g)

 

62.              Nitrogen monoxide reacts with oxygen according to the reaction:

2NO(g) + O2(g) ? 2NO2(g)

If 12 moles of nitrogen monoxide react with 10 moles of oxygen, how many moles of NO2 will be formed?

A)  2 moles    B)  5 moles    C)  6 moles    D)  10 moles    E)  12 moles

 

63.              Nitrogen monoxide reacts with oxygen according to the reaction:

2NO(g) + O2(g) ? 2NO2(g)

If 10 moles of nitrogen monoxide react with 4 moles of oxygen, how many moles of NO2 will be formed?

A)  4 moles    B)  8 moles    C)  10 moles    D)  12 moles    E)  14 moles

 

64.              Aluminum reacts with oxygen according to the reaction:

4Al(s) + 3O2(g) ? 2Al2O3(s)

If 24 moles of aluminum react with 12 moles of oxygen, how many moles of Al2O3 will be formed?

A)  4.0 moles    B)  8.0 moles    C)  6.0 moles    D)  5.0 moles    E)  26 moles

 

65.              Aluminum reacts with oxygen according to the reaction:

4Al(s) + 3O2(g) ? 2Al2O3(s)

If 12 moles of aluminum react with 6 moles of oxygen, how many moles of Al2O3 will be formed?

A)  4 moles    B)  8 moles    C)  6 moles    D)  12 moles    E)  20 moles

 

66.              Consider the following reaction:

3NO2(g) + H2O(l) ? 2HNO3(l) + NO(g)

How many moles of NO2 are required to react with 1.50 moles of H2O to form 3.00 moles of HNO3?

A)  1.50 mol    B)  3.00 mol    C)  4.00 mol    D)  4.50 mol    E)  9.00 mol

 

67.              Consider the following reaction:

3NO2(g) + H2O(l) ? 2HNO3(l) + NO(g)

How many moles of the excess reactant remain if 4.00 moles of H2O and 10.00 moles of NO2 are mixed?

A)0.67 mol H2OD)6.00 mol NO2

B)2.00 mol NO2E)8.00 mol NO2

C)3.33 mol H2O

 

68.              Iron metal reacts with chlorine gas according to the equation:

2Fe(s) + 3Cl2(g) ? 2FeCl3(s)

If 35.0 g each of iron and chlorine react, how much FeCl3 will be formed?

A)  102 g    B)  155 g    C)  53.4 g    D)  80.0 g    E)  68.0 g

 

69.              Iron metal reacts with chlorine gas according to the equation:

2Fe(s) + 3Cl2(g) ? 2FeCl3(s)

If 25.6 g each of iron and chlorine react, how much FeCl3 will be formed?

A)  74.3 g    B)  113 g    C)  39.0 g    D)  49.5 g    E)  26.0 g

 

70.              In the process of obtaining lead from PbS, or galena, the galena is “roasted” (heated in the presence of oxygen), so that the following reaction occurs:

2PbS(s) + 3O2(g) ? 2PbO(s)  + 2SO2(g)

If 50.0 g of PbS reacts with 25.0 g of oxygen, how many grams of PbO will be formed?

A)  116 g    B)  46.6 g    C)  163 g    D)  69.9 g    E)  93.2 g

 

 

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