Compare the entropy of gases with solids.

Answer

d

Explanation

`Al_(2)O_(3)(` Molten`) overset(El ectrolysis)rarr 2Al^(3+)+3O^(2-)`
First method
`Al^(3+)+3e^(-) rarr Al`
`3F=3xx96500C=1mol `of `Al=27g `of `Al`
or
`27 g `of `Al =3xx96500C`
`5.12xx10^(3)g` of `Al=(3xx96500xx5.12xx10^(3))/(27)`
`=5.49xx10^(7)C`
Second methode
`1F=96500C`
`=1Eq` of `Al`
`=(27)/(3)g `of `Al=9g` `(n` factor for `All^(3+)=3)`
`:. 9g ` of `Al=96500C`
`5.12xx10^(3)g` of `Al=(96500xx5.12xx10^(3))/(9)`
`=5.49xx10^(7)C`