A mixture of ferric oxide (`Fe_(2)O_(3)`) and Al is used as a solid rocket fuel which reacts to give `Al_(2)O_(3)` and Fe . No other reactants and products are involved . On complete reaction of 1 mole of `Fe_(2)O_(3)`, 200 units of energy is released.
(a) Write a balance reaction representing the above change.
(b) What should be the ratio of masses of `Fe_(2)O_(3)` and Al taken so that maximum energy per unit of fuel is released.
(c) What would be energy released if 16 kg of `Fe_(2)O_(3)` reacts with 2.7 kg of Al.

Answer

`(i)Fe_(2)O_(3)+2Al toAl_(2)O_(3)+2Fe;(ii)80:27;(iii)10,000` units