Metallurgy and Isolation of ElementshardNUMERICAL

In the auto-reduction of copper during Bessemerisation, moles of Copper(I) oxide () react exactly wiMetallurgy and Isolation of Elements Chemistry Question

Question

In the auto-reduction of copper during Bessemerisation, $x$ moles of Copper(I) oxide ($Cu_2O$) react exactly with $1$ mole of Copper(I) sulphide ($Cu_2S$) to produce $y$ moles of elemental Copper. What is the value of $(x + y)$?

Answer: 8

💡 Solution & Explanation

The balanced chemical equation for the self-reduction of copper is: $2Cu_2O + Cu_2S \xrightarrow{\Delta} 6Cu + SO_2 \uparrow$. According to the stoichiometry, $x = 2$ moles of $Cu_2O$ and $y = 6$ moles of $Cu$. Thus, $x + y = 2 + 6 = 8$.

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