The value of `(Delta_(f)G^(@))` for formation of `Cr_(2)O_(3)` is `-"540kJ.mol"^(-1)` and that of `Al_(2)O_(3)` is `-"827kJ.mol"^(-1)`. Is the reduction of `Cr_(2)O_(3)` possible with Al?

The Delta_(g)G^(@) for the formation of Cr_(2)O_(3) is -"540 kJ.mol"^(-1) and that of Al_(2)O_(3) is -"827 kJ.mol"^(-1) . Is it possible to reduce Cr_(2)O_(3) with aluminium?

Carbon anode in the electrolytic reduction of Al_(2)O_(3) .

Which one is more basic and why-mGo & Al_(2)O_(3) ?

An intimate mixture of ferric oxide, (Fe_(2)O_(3)) and aluminium, (Al) is used in solid fuel rockets. Calculate the fuel value per gram and fuel value per cc of the mixture. Heats of formation and densities are as follows : Delta H_(f)^(0)(Al_(2)O_(3))= 399 " kcal mol"^(-1), Delta H_(f)^(0)(Fe_(2)O_(3))= 199 " kcal mol"^(-1) , Density of Fe_(2)O_(3)= 5.2 g// c c , Density of Al= 2.7g// c c .

Find out the heat of formation of CH_(3)CO OH . Given that the heat of Combustion of CH_(3)CO OH is -867 " kJ mol"^(-1) and the heat of formation of CO_(2) and H_(2)O are -393.5 and -285.9 " kJ mol"^(-1) respectively.

At 25^(@)C and 1 atm, heat of formation of C_(2)H_(4) (g), CO_(2)(g) and H_(2)O(l) are 52 " kJ mol"^(-1), -394 " kJ mol"^(-1) and -286 " kJ mol"^(-1) respectively. Calculate the heat of combustion of C_(2)H_(4)(g) .

The oxidation state of Cr in the product obtained by the reduction of K_(2)Cr_(2)O_(7) by atomic hydrogen is-

Al(s) and Fe(s) are oxidised by oxygen to form Al_(2)O_(3)(s) and Fe_(2)O_(3)(s) respectively. If the standard enthalpy of formation of Al_(2)O_(3)(s) and Fe_(2)O_(3)(s) are -1669.8 " kJ mol"^(-1) and -824.2 " kJ mol"^(-1) respectively, calculate the change in enthalpy of the given reaction : 2Al(s)+Fe_(2)O_(3)(s) to 2Fe(s)+Al_(2)O_(3)(s)

Aluminium reduces Cr_(2)O_(3) to Cr, but chromium cannot reduce Al_(2)O_(3) to Al- why?