Home
Class 12
CHEMISTRY
Which of the following metal oxide is mo...

Which of the following metal oxide is more stable if the free of formation of `Cr_(2)O_(3) and Al_(2)O_(3)`per mole of oxygen consumed are `-540Kj and -827kJ` respectively?

A

`Cr_(2)O_(3)`

B

`Al_(2)O_(3)`

C

Both have equal stablility

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Which metal is used for reducing Cr_(2)O_(3) and Mo_(2)O_(3) to metal ?

Why is Al_(2)O_(3) amphoteric oxide?

What is the enthalpy change for the given reaction, if enthalpies of formation of Al_(2)O_(3) and Fe_(2)O_(3) are -"1670 kJ mol"^(-1) and -"834 kJ mol"^(-1) respectively? Fe_(2)O_(3) +2Al rarr Al_(2)O_(3)+2Fe

Assertion : Delta_(f)G^(@) for the formation of Al_(2)O_(3) " and " Cr_(2)O_(3) involving one mole of oxygen are -827 " kJ mol"^(-1) " and " -540 " kJ mol"^(-1) respectively Reason : Al can reduce Cr_(2)O_(3) " since " Delta_(f)G^(2) for its formation is less.

Calculate Delta H for the reaction Al + Cr_2O_3 rarr Cr +Al_2O_3 When enthalpy of formation of Al_2O_3 and Cr_2O_3 , are -1596 kJ and -1133 kJ respectively.