Extracting copper from sulfide ores can be performed by roasting the ore in oxygen,with a subsequent reaction of copper (I) oxide with carbon.Simplified chemical equations for these steps are shown below.Mathematically combine the two reactions to create an overall balanced equation.Eliminate like terms from your final equation and use the lowest whole-number coefficients possible.Select the statement regarding the overall balanced reaction that is NOT true. 2 Cu₂S(s) + 3 O₂(g) $\to$ 2 Cu₂O(s) + 2 SO₂(g)
Cu₂O(s) + C(s) $\to$ 2 Cu(s) + CO(g)

Question

Extracting copper from sulfide ores can be performed by roasting the ore in oxygen,with a subsequent reaction of copper (I) oxide with carbon.Simplified chemical equations for these steps are shown below.Mathematically combine the two reactions to create an overall balanced equation.Eliminate like terms from your final equation and use the lowest whole-number coefficients possible.Select the statement regarding the overall balanced reaction that is NOT true. 2 Cu₂S(s) + 3 O₂(g)

\to

2 Cu₂O(s) + 2 SO₂(g)
Cu₂O(s) + C(s)

\to

2 Cu(s) + CO(g)

Quizplus · Accepted Answer

The combined equation is: 2 CuS(s) + 3 O2(g) + C(s) -> 2 Cu(s) + CO2(g) + 2 SO2(g). The coefficients are already reduced to their lowest whole-number values. This equation shows that two moles of copper result when two moles of carbon react, which is true. The other statements are also true except for A, which is false as the balanced equation requires six moles of oxygen gas. Therefore, the correct answer is B.

Extracting Copper from Sulfide Ores Can Be Performed by Roasting →\to→

Extracting Copper from Sulfide Ores Can Be Performed by Roasting $\to$