The value of -1 G - for formation of Cr 2 O 3 is -540 kJmol -1 and that of Al 2 O 3 is -827 kJmol -1- Is the reduction of Cr 2 O 3 possible with Al-

The value of for the formation of Cr2O3 from Cr (−540 kJmol−1) is higher than that of Al2O3 from Al (−827 kJmol−1). Therefore, Al can reduce Cr2O3 to Cr. Hence ...

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Byju's Answer

Standard XII

Chemistry

Chemical Properties of Aromatic Compounds

The value of ...

Question

The value of for formation of Cr₂O₃is − 540 kJmol⁻¹ and that of Al₂ O₃ is − 827 kJmol⁻¹. Is the reduction of Cr₂O₃ possible with Al?

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Solution

The value of for the formation of Cr₂O₃ from Cr (−540 kJmol⁻¹) is higher than that of Al₂O₃ from Al (−827 kJmol⁻¹). Therefore, Al can reduce Cr₂O₃ to Cr. Hence, the reduction of Cr₂O₃ with Al is possible.

Alternatively,

Subtracting equation (ii) from (i), we have

As for the reduction reaction of Cr₂O₃ by Al is negative, this reaction is possible.

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Similar questions

Q. The value of

Δ_{f} G^{0}

for formation of

C r_{2} O_{3}

- 540 k J m o l^{- 1}

and that of

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C r_{2} O_{3}

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Q. Value of

△ G^{\circ}

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C r_{2} O_{3}

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Q. The value of

Δ_{f} G^{0}

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540 {kJ mol}^{- 1}

and that of

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is feasible reaction?

The value of $△_{f} G^{\circ}$ for formation of $C r_{2} O_{3}$ is - 540 KJ/mol and that of $A l_{2} O_{3}$ is - 827 kj/ mol. Is the reduction of $C r_{2} O_{3}$ possible with AI?

Q. The value of

Δ_{r} G^{\circ}

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The value of for formation of Cr2O3 is − 540 kJmol−1 and that of Al2 O3 is − 827 kJmol−1. Is the reduction of Cr2O3 possible with Al?

The value of for formation of Cr₂O₃is − 540 kJmol⁻¹ and that of Al₂ O₃ is − 827 kJmol⁻¹. Is the reduction of Cr₂O₃ possible with Al?