Home
Class 12
CHEMISTRY
In the reaction Cr2O3 + 2Al to Al2O3 ...

In the reaction
`Cr_2O_3 + 2Al to Al_2O_3 + 2Cr, DeltaG^@ = - 421 kJ` is thermodynamically feasible. This is apparent from Gibbs energy value. Why does it not take place at room temperature ?

Text Solution

Verified by Experts

The reaction is thermodynamically favourable. As we know, even thermodynamically favourable reactions require some activation energy to proceed, therefore, this reaction does not occur at room temperature. Heating is required for this reaction to start.
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MBD -HARYANA BOARD|Exercise SHORT ANSWER TYPE QUESTIONS|21 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|3 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|3 Videos

  • ELECTROCHEMISTRY

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|12 Videos

  • HALOALKANES AND HALOARENES

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|10 Videos

Similar Questions

Explore conceptually related problems

The reaction Cr_2O_3+2AltoAl_2O_3+2Cr (triangleG^(ɵ)=-421kJ)) Is thermodynamically feasible as is apparent from the Gibbs energy value. Why does it not take place at room temperature?

Give reason : Reduction of Cr_(2) O_(3) with Al is thermodynamically feasible, yet it does no occur at room temperature.

(A) The reduction reaction, Cr_(2)O_(3)+2Al to Al_(2)O_(3)+2Cr, DeltaG^(0)=-421KJ is not possible at room temperature (R ) Certain amount of activation energy is essential for the reaction to make it thermodynamically feasible.