2. Zinc is one of the most valuable metals in the building and construction in- dustry. 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 ex- tracted 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 pro- duce solid zinc and carbon monoxide gas. A. Write the balanced chemical reactions for steps 1 and 2 separately. Do not forget to indicate the states of the reactants and products (s, I, g). B. In step 2, is graphite acting as the reducing agent or the oxidizing agent? C. Calculate the theoretical yield of solid zinc if 432.4 grams of the sphalerite ore is made to undergo the extraction process outlined above. Express your an- swer in 4 significant figures.

2. Zinc is one of the most valuable metals in the building and construction in- dustry. 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 ex- tracted 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 pro- duce solid zinc and carbon monoxide gas. A. Write the balanced chemical reactions for steps 1 and 2 separately. Do not forget to indicate the states of the reactants and products (s, I, g). B. In step 2, is graphite acting as the reducing agent or the oxidizing agent? C. Calculate the theoretical yield of solid zinc if 432.4 grams of the sphalerite ore is made to undergo the extraction process outlined above. Express your an- swer in 4 significant figures.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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