When 4g of iron is burnt to ferric oxide at constant pressure, 29.28 kJ of heat is evolved. What is the enthalphy of formation of ferric oxide? (At. Wt of Fe=56)

Options

(a) -40.99 kJ
(b) -81.98 kJ
(c) 819.8 kJ
(d) -819.8 kJ

Correct Answer:

-819.8 kJ

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.