chemistry

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.

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  1. It takes heat to do this reduction reaction, ie, it absorbs heat, so the sign of deltaH is ....

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    bobpursley
  2. Why guess?
    Work it out.
    dHrxn = (n*dHf products) - (n*dHf reactants)

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  3. well if the system loses heat E, delta H is - , if the system requires an input of energy delta H is +

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  4. I believe the answer is b. Do you guys think I am correct.

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  5. The correct answer is B

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