In the Goldschmidt aluminothermic process (thermite reaction), which of the following mixtures is ut — Metallurgy and Isolation of Elements Chemistry Question
Question
In the Goldschmidt aluminothermic process (thermite reaction), which of the following mixtures is utilized to initiate the highly exothermic reduction of a transition metal oxide?
Answer: B
💡 Solution & Explanation
The thermite reaction requires extremely high initial heat to overcome activation energy. This is provided by an 'ignition mixture' (or igniter), which is a small amount of Magnesium powder mixed with Barium peroxide ($BaO_2$). Igniting the Mg ribbon starts the violent exothermic reaction $Mg + BaO_2 \rightarrow BaO + MgO + Heat$.
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