Oklahoma State University

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1. The balanced reaction for the combustion of methane;

CH4(g) + 2O2(g) --> CO2(g) + 2H2O(l)

Consider mixing 1.50 mol of methane with 1.80 mol of oxygen. Assume there is no carbon dioxide or water present in the initial mixture.

2. Which of the following ICE Tables (I or II) make sense assuming the initial amounts above and that the reaction goes to completion.

Table I: Based on assuming all the CH4 reacts

 

REACTANTS

REACTANTS

PRODUCTS

PRODUCTS

Equation

CH4

2O2

--->

CO2

2H2O

Initial Amount

1.50 mol

1.80 mol

0 mol

0 mol

Change Amount

-1.50 mol

-3.00 mol

+1.50 mol

+3.00 mol

Final Amount

0 mol

-1.20 mol

+1.50 mol

+3.00 mol

Table II: Based on assuming all the O2 reacts

 

REACTANTS

REACTANTS

PRODUCTS

PRODUCTS

Equation

CH4

2O2

--->

CO2

2H2O

Initial Amount

1.50 mol

1.80 mol

0 mol

0 mol

Change Amount

-0.90 mol

-1.80 mol

+0.90 mol

+1.80 mol

Final Amount

+0.60 mol

0 mol

+0.90 mol

+1.80 mol

 

Table makes the most sense;

briefly explain your reasoning.

3. The balanced reaction for the synthesis of ammonia;

N2(g) + 3H2(g) --> 2NH3(g)

Consider mixing 0.50 mol of nitrogen with 2.10 mol of hydrogen. Assume there is no ammonia present in the initial mixture.

4. Which of the following ICE Tables (III or IV) make sense assuming the initial amounts above and that the reaction goes to completion.

Table III: Based on assuming all the N2 reacts

 

REACTANTS

REACTANTS

PRODUCTS

Equation

N2

3H2

--->

2NH3

Initial Amount

0.50 mol

2.10 mol

0 mol

Change Amount

-0.50 mol

-1.50 mol

+1.00 mol

Final Amount

0 mol

+0.60 mol

+1.00 mo

Table IV: Based on assuming all the H2 reacts

 

REACTANTS

REACTANTS

PRODUCTS

Equation

N2

3H2

--->

2NH3

Initial Amount

0.50 mol

2.10 mol

0 mol

Change Amount

-0.70 mol

-2.10 mol

+1.40 mol

Final Amount

-0.20 mol

0 mol

+1.40 mol

 

Table makes the most sense;

briefly explain your reasoning

5. Write the balanced equation that best describes the change/reaction that occurs in the containers below.

The equation is

6. Is there anything about the questions that you feel you do not understand? List your concerns/questions.

7. If there is one question you would like to have answered in lecture, what would that question be?