Asked by Morgan

What is the entropy change associated with the chemical reaction that occurs when iron oxide is converted to its metal form?
Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)

A. Zero
B. Positive
C. Negative
D. Cannot be determined

I think the answer is b or c.
Answered by bobpursley
It takes heat to do this reduction reaction, ie, it absorbs heat, so the sign of deltaH is ....
Answered by DrBob222
Why guess?
Work it out.
dHrxn = (n*dHf products) - (n*dHf reactants)
Answered by san
well if the system loses heat E, delta H is - , if the system requires an input of energy delta H is +
Answered by Morgan
I believe the answer is b. Do you guys think I am correct.
Answered by Anonymous
The correct answer is B
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