Zinc is one of the most valuable metals in the building and construction industry. One of the many ways to obtain zinc is to extract it from natural sources such as ores. The chief ore mineral of zinc is sphalerite (zinc sulfide). Zinc is extracted from sphalerite by performing the following steps: Step 1: The ore is reacted with oxygen gas at around 900ºC in a furnace to form a zinc oxide precipitate and sulfur dioxide gas. Step 2: The precipitate is then reacted with graphite (C(s)) to eventually produce solid zinc and carbon monoxide gas. 2ZnS(s) + 3O2(g) -----> 2ZnO(s) + 2SO2(g) ZnO(s) + C(s) ----> Zn(s) + CO(g) a. If in an actual extraction experiment, a chemist obtained 180.0 grams of solid zinc, what is the %yield? Express your answer in 4 significant figures. b. A copper(II) sulfate solution was accidentally spilled into the final solid product obtained from the extraction experiment above. Write the balanced chemical equation for this reaction and identify the type of reaction. (Choices: combination, decomposition, single displacement, double displacement).
Zinc is one of the most valuable metals in the building and construction industry. One of the many ways to obtain zinc is to extract it from natural sources such as ores. The chief ore mineral of zinc is sphalerite (zinc sulfide). Zinc is extracted from sphalerite by performing the following steps:
Step 1: The ore is reacted with oxygen gas at around 900ºC in a furnace to form a zinc oxide precipitate and sulfur dioxide gas.
Step 2: The precipitate is then reacted with graphite (C(s)) to eventually produce solid zinc and carbon monoxide gas.
2ZnS(s) + 3O2(g) -----> 2ZnO(s) + 2SO2(g)
ZnO(s) + C(s) ----> Zn(s) + CO(g)
a. If in an actual extraction experiment, a chemist obtained 180.0 grams of solid zinc, what is the %yield? Express your answer in 4 significant figures.
b. A copper(II) sulfate solution was accidentally spilled into the final solid product obtained from the extraction experiment above. Write the balanced chemical equation for this reaction and identify the type of reaction. (Choices: combination, decomposition, single displacement, double displacement).
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