Metallurgy and Isolation of ElementshardNUMERICAL

In Serpeck's process for purifying white bauxite, the impurity is removed by high-temperature reductMetallurgy and Isolation of Elements Chemistry Question

Question

In Serpeck's process for purifying white bauxite, the $SiO_2$ impurity is removed by high-temperature reduction. In the balanced chemical equation for the reduction of one mole of $SiO_2$ by Coke ($C$), what is the stoichiometric coefficient of carbon?

Answer: 2

💡 Solution & Explanation

The reaction for the removal of silica impurity in Serpeck's process is: $SiO_2 + 2C \xrightarrow{1800^\circ C} Si \uparrow + 2CO \uparrow$. Thus, 2 moles of carbon are required per mole of silica.

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