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