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Based on given information DeltaG^(@)(f)...

Based on given information `DeltaG^(@)_(f)(CaO) =- 604.2kJ//mol` and `DeltaG^(@)_(f)(A1_(2)O_(3)) =- 1582kJ//mol`, which of the following is feasible?

A

`2Ca +A1_(2)O_(3)rarr2A1+3CaO`

B

`3CaO +2A1 rarrA1_(2)O_(3) +3Ca`

C

Both `(a)` and `(b)`

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
A
`3Ca +A1_(2)O_(3)rarr 2A1 +3CaO`
`DeltaG^(@) = 3xxDeltaG^(@) (CaO) - DeltaG^(@) (A1_(2)O_(3))`
`= 3xx(-604.2)-(-1582)`
`=- 1812 + 1582`
`=- 230kJ`
`DeltaG^(@)` is negative. Hence, this reaction is feasible.
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