Home
Class 12
CHEMISTRY
AI is costilier than Fe but AI is sacrif...

AI is costilier than Fe but AI is sacrificed to convert `Fe_(2)O_(3)` into `Fe`. Why this change is possible. Name this process :
`{:(Delta G_(f(Fe_(2)O_(3)))^(@) =-"742.2 kJ/mole"),(Delta G_(f(AI_(2)O_(3)))^(@)=-"1582 kJ/mole"):}`

Text Solution

AI Generated Solution

To solve the question, we need to understand why aluminum (Al) can be used to reduce iron(III) oxide (Fe₂O₃) to iron (Fe), despite aluminum being more expensive than iron. We will also identify the process involved. ### Step-by-Step Solution: 1. **Write the Reaction**: The reaction for the reduction of iron(III) oxide by aluminum can be written as: \[ 2Al + Fe_2O_3 \rightarrow 2Fe + Al_2O_3 ...
Promotional Banner

Topper's Solved these Questions

  • ORES AND METALLURGY

    FIITJEE|Exercise SOLVED PROBLEMS (SUBJECTIVE)|10 Videos

  • ORES AND METALLURGY

    FIITJEE|Exercise SOLVED PROBLEMS (OBJECTIVE)|10 Videos

  • NUCLEIC ACID AND VITAMIN

    FIITJEE|Exercise ASSIGNMENT PROBLEMS (OBJECTIVE)|15 Videos

  • PERIODIC PROTERTIES OF ELEMENTS

    FIITJEE|Exercise COMPREHENSION|13 Videos

Similar Questions

Explore conceptually related problems

(A) Reduction of Cr_(2)O)(3) with the Aluminium is possible ( R ) DeltaG_((f))^(0) of Cr_(3)O_(3) " is -540kj//mole and" DeltaG_((f))^(0) of Al_(2)O_(3) is -827kj//"mole"

At what temperature the following process would not be spontanous ? 4Fe(s)+3O_(2)(g)to2Fe_(2)O_(3)(s) DeltaH=-1648 kJ//"mole" DeltaS=-560 J//"mole"

What will be the maximum amount of heat realeased when 321 g of a mixuture of fe_(2)O_(3) and Al is subjected to sparkling in absence of air? DeltaH_(f)(Fe_(2)O_(3)=-199kJ// mole DeltaH_(f)(Al_(2)O_(3)=-399kJ// mole

In the reaction 4Fe + 3O_(2) to 2Fe_(2)O_(3) . Fe acts as an oxidizing agent.

Delta_(f)H^(@) of Fe_(2)O_(3) is -825 kJ. What is the enthalpy change for the reaction? 4Fe_(2)O_(3) to 8Fe + 6O_(2)

The heat of formation of Fe_(2)O_(3)(s) is -824.0 kJ.What will be the Delta H for thereaction: 2Fe_(2)O_(3)(s) to 4Fe(s) + 3O_(2)(g)

An intimate mixture of ferric oxide and aluminium is used as solid fuel in rockets. Calculate the fuel value per cm^(3) of the mixture. Heats of formation and densities are as follows: H_(f(AI_(2)O_(3)))^(Theta)=-399kcal mol^(-1),H_(f(Fe_(2)O_(3)))^(Theta)=-199kcal mol^(-1) Density of Fe_(2)O_(3)=4.0 g cm^(-3) , Density of AI = 2.0 g cm^(-3)