thermodynamics problems

 (10 points)

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Calculate the minimum temperature above which the following reaction
will be product-favored (spontaneous).

2 Ag2O(s) -------( 4Ag(s) + 02(g)







a.

298 K  



b.

467.8 K  



c.

0.002137 K  



d.

2.137 K  



Answer is A

 (10 points)

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a.

4.16 K  



b.

3645 K  



c.

298 K  



d.

4160 K  

Calculate the minimum temperature above which the following reaction
will be product-favored (spontaneous).

2Cr2 03(s) --( 4Cr(s) + 3O2(g)

,









Answer is A

 (10 points)

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Calculate the minimum temperature above which the following reaction
will be product-favored (spontaneous).

2NiO(s) --( 2Ni(s) + O2(g)







a.

2.538 K  



b.

0.0003940 K  



c.

2538 K  



d.

4357 K  



Answer is B

 (10 points)

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Calculate the minimum temperature above which the following reaction
will be product-favored (spontaneous).



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S/Tables/ThermoTable.htm','new_window','width=480,height=360,menubar=0,t
oolbar=0,scrollbars=1,status=1,location=0,resizable=1,resizable=1',0))"
P4O10(s) -( P4(s,white) + 5O2(g)





a.

310.45 K  



b.

0.00032212 K  



c.

3104.5 K  



d.

298 K  



Answer is B

 (10 points)

Top of Form

Calculate the minimum temperature above which the following reaction
will be product-favored (spontaneous).



HYPERLINK
"javascript:void(doWindowOpen=window.open('/CHE112C11_05M_WiltFlemon/CTM
S/Tables/ThermoTable.htm','new_window','width=480,height=360,menubar=0,t
oolbar=0,scrollbars=1,status=1,location=0,resizable=1,resizable=1',0))"
2Al2O3(s) -( 4Al(s) + 3O2(g)





a.

5350 K  



b.

5.35 K  



c.

298 K  



d.

0.000187 K  

Answer is C

 (10 points)

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Calculate the minimum temperature above which the following reaction
will be product-favored (spontaneous).

2Ca0(s) -( 2Ca(s) + O2(g)







a.

298 K  



b.

6.093 K  



c.

6093 K  



d.

7643 K  



Answer is D





 

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Calculate the minimum temperature above which the following reaction
will be product-favored (spontaneous).

Fe3O4(s) ---( 3Fe(s) + 2O2(g)







a.

3.221 K  



b.

4105 K  



c.

3221 K  



d.

0.0003105 K  



Answer is A





Question 8 

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The thermodynamic equilibrium constant for the following reaction is
0.15 at 1227°C.

2 SO2(g) + O2(g) <=>2 SO3(g)

Check the box for each true statement.





a.

The reaction is product-favored.  



b.

The reaction is reactant-favored.  



c.

G°is less than zero.  



d.

G° is greater than zero.  



e.

G° is equal to zero.  

B,C





Question 9 

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The thermodynamic equilibrium constant for the following reaction is
2.31 x 10-3 at 1073K.

2HI(g) <=>H2(g) + I2(g)

Check the box for each true statement.





a.

The reaction is product-favored.  



b.

The reaction is reactant-favored.  



c.

G° is less than zero.  



d.

G° is greater than zero.  



e.

G° is equal to zero.  



Answer is A,E





 (10 points)

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The thermodynamic equilibrium constant for the following reaction is
0.1764 at 1500°C.

CO(g) + 3H2(g) <=>CH4(g) + H2O(g)

Check the box for each true statement.





a.

The reaction is product-favored.  



b.

The reaction is reactant-favored.  



c.

G° is less than zero.  



d.

G° is greater than zero.  



e.

G° is equal to zero.  

Bottom of Form



Answer is D, A