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  • In Goldschmidt alumino thermic process which of the following reducing agents is used:Option: 1 Calcium

In Goldschmidt alumino thermic process which of the following reducing agents is used:

Option: 1

Calcium


Option: 2

Coke 


Option: 3

Al-powder


Option: 4

Sodium


Answers (1)

best_answer

Alumino thermite process: Certain oxides of Mn, and Cr does not reduce by carbon due to the very high melting point. Al reduces them.

\\\textup{Reactions: }\\ \mathrm{C r_{2} O_{3}+2 A l \rightarrow 2 C r+A l_{2} O_{3}}$ \\ $\mathrm{3 M n_{3} O_{4}+8 A l \rightarrow 9 M n+4 A l_{2} O_{3}}

Option 3 is correct.

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Nehul

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