If the heats of formation of Al2O3 and F...

If the heats of formation of `Al_2O_3` and `Fe_2O_3` are -400 K.Cal and -190 K.Cal respectively, the heat of the following reaction is
`2Al + Fe_2O_3 rarr 2Fe + Al_2O_3`

A

`210 K.Cal `

B

`590 K.Cal `

C

`-590 K.Cal`

D

`-210 K.Cal `

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The correct Answer is:

D

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