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When compared to DeltaG^(@) for the form...

When compared to `DeltaG^(@)` for the formation of `Al_(2)O_(3),` the `DeltaG^(@)` for the formation of `Cr_(2)O_(3)` is

A

same

B

unpredicted

C

higher

D

lower

Text Solution

Verified by Experts

The correct Answer is:
A
Al acts as a good reducing agent and reduces oxides of metals like Cr , Fe , Mn , etc.
`Cr_(2)O_(3)+2Alto2Cr+Al_(2)O_(3)+` heat Therefore `DeltaG^(@)` for the formation of `Al_(2)O_(3)` is lower in comparison to `DeltaG^(@)` for the formation of `Cr_(2)O_(3)`.
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