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Carbon cannot be used in the reduction o...

Carbon cannot be used in the reduction of `A1_(2)O_(3)` because:

A

it is an expensive

B

the enthalpy of formation of `CO_(2)` is more than that of `AI_(2)O_(3)`

C

pure carbon is not easily available

D

the enthalpy of formation of `AI_(2)O_(3)` is too high

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaH_(f)` for `AI_(2)O_(3)` is very high `:'` stasicity `uarr uarr`
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