The Goldschmidt thermite process uses Aluminium to reduce transition metal oxides. Consider the bala — Metallurgy and Isolation of Elements Chemistry Question
Question
The Goldschmidt thermite process uses Aluminium to reduce transition metal oxides. Consider the balanced chemical equation for the reduction of Manganese(II,III) oxide ($Mn_3O_4$) by Aluminium powder: $a Mn_3O_4 + b Al \rightarrow c Al_2O_3 + d Mn$. When balanced with the smallest whole numbers, what is the sum of the stoichiometric coefficients of the products $(c + d)$?
Answer: 13
💡 Solution & Explanation
The balanced thermite reaction for $Mn_3O_4$ is: $3Mn_3O_4 + 8Al \rightarrow 4Al_2O_3 + 9Mn$. The products are $Al_2O_3$ and $Mn$, with coefficients $c = 4$ and $d = 9$. The sum $c + d = 4 + 9 = 13$.
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