The reaction, `Cr_(2)O_(3)+2AlrarrAl_(2)O_(3)+2Cr(DeltaG^(Theta)=-421K – InterviewSolution

1.	The reaction, `Cr_(2)O_(3)+2AlrarrAl_(2)O_(3)+2Cr(DeltaG^(Theta)=-421KJ)` is the thermodynamically feasible as is apparent from the Gibbs energy value . Why does it not take place at rom temperture?
Answer» Certain amount of activation energy is essential even for such reations which are thermodyamically feasible, therefore heating is required .

Discussion

No Comment Found

Related InterviewSolutions

Why is the extraction of copper form pyries more difficult then that from its oxide ore through reduction?
How is leaching carried out in the case of low grade copper ores?
At a site, low grade copper ores are avilable and Zinc and iron scraps are also avilable . Which of the two scraps would be more suitable for reducing the leached copper ore and why?
Copper can be extracted by hydrometallurgy but not Zinc -explain.
Write any two ores with formulae of the following metals: (a) Aluminium (b) Zinc (c) Iron (d) copper
Give the uses of a) cast iron b) wrought iron c) Nickel steel d) Stainless steel
Between C and CO, Which is a better reducing agent for ZnO?
Suggest a condition under which magnesium could reduce alumina.
The Value of `DeltaG^(@)` for the formation of `Cr_(2)O_(3)` is `-"540KJ mol"^(-1)` and that of `Al_(2)O_(3)` is `-827"KJ mol"^(-1)`. Is the reduction of `Cr_(2)O_(3)` possible with Al ?
The reaction, `Cr_(2)O_(3)+2AlrarrAl_(2)O_(3)+2Cr(DeltaG^(Theta)=-421KJ)` is the thermodynamically feasible as is apparent from the Gibbs energy value . Why does it not take place at rom temperture?