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When 4g of iron is burnt to ferric oxide...

When `4g` of iron is burnt to ferric oxide at constant pressure, `29.28KJ` of heat is evolved. What is the enthalpy of formation of ferric oxide (At wt. of `Fe=56`)

A

`-81.98`kJ

B

`-819.8`kJ

C

`-40.99`kJ

D

`+819.8`kJ

Text Solution

Verified by Experts

The correct Answer is:
B
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