Skill 3-7:
38
Copper is obtained from sulfide ores by roasting the ore with O2 to form powdered copper(I) oxide and gaseous sulfur dioxide.
(a) How many moles of oxygen are required to roast 10.0 mol copper(I) sulfide?
Write the balanced equation first. The reactants are Cu 2S and O 2 , and the products are Cu 2O and SO 2 :
Given the moles of Cu 2S; need to find the moles of O 2.
(b) How many grams of sulfur dioxide are formed when 10.0 mol copper(I) sulfide are roasted?
| Previous slide | Next slide | Back to first slide | View graphic version |