For the reaction Fe2O3(s) + 3H2(g)2Fe(s) + 3H2O(g) H° = 98.8 kJ and S° = 143

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For the reaction


Fe2O3(s) + 3H2(g)2Fe(s) + 3H2O(g)

H° = 98.8 kJ and S° = 143 J/K

G° for this reaction would be negative at temperatures (above, below) K.

Enter above or below in the first box and enter the temperature in the second box. Assume that H° and S° are constant.
Jun 3rd, 2015

Please let me know if you need any clarification. I'm always happy to answer your questions.


98800 -(T*143) <0

690.91 <T

So temperature should be above 690.91 k or above 691 k


Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 3rd, 2015

its two answers

Jun 3rd, 2015

above 691k

Jun 3rd, 2015

could u do this one please 

4HCl(g) + O2(g)2H2O(g) + 2Cl2(g)

H° = -114 kJ and S° = -129 J/K

G° would be less than zero at temperatures (above, below)  K.

Enter above or below in the first box and enter the temperature in the second box. Assume that H° and S° are constant.

Jun 3rd, 2015

Can you please post this as a separate question?

Jun 3rd, 2015

i did 

Jun 3rd, 2015

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Jun 3rd, 2015
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Jun 3rd, 2015
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