Methane, CH4, burns in oxygen. What are the products of the reaction? Write the balanced equation for the reaction. What mass of O2, in grams, is required for complete combustion of 25.5 g of methane? What is the total mass of products expected from the combustion of 25.5 g of methane? 2.The metals industry was a major source of air pollution years ago. One common process involved “roasting” metal sulfides in the air: 2 PbS(s) + 3 O2(g) !’"#$%&⎯⎯) 2 PbO(s) + 2 SO2(g)
- Methane, CH4, burns in oxygen.
- What are the products of the reaction?
- Write the balanced equation for the reaction.
- What mass of O2, in grams, is required for complete combustion of 25.5 g of methane?
- What is the total mass of products expected from the combustion of 25.5 g of methane?
2.The metals industry was a major source of air pollution years ago. One common process involved “roasting” metal sulfides in the air:
2 PbS(s) + 3 O2(g) !’"#$%&⎯⎯) 2 PbO(s) + 2 SO2(g)
If 2.50 mol of PbS is heated in air, what amount of O2 is required for complete reaction? What amounts of PbO and SO2 are expected?
3.Iron ore is converted to iron metal in a reaction with carbon.
2 Fe2O3(s) + 3 C(s) ’!"#$%&⎯⎯) 4 Fe(s) + 3 CO2(g)
If 6.2 mol of Fe2O3(s) is used, what amount of C(s) is needed, and what amounts of Fe and CO2 are produced?
4.Sodium sulfide, Na2S, is used in the leather industry to remove hair from hides. The Na2S is made by the reaction
Na2SO4(s) + 4 C(s) !’"#$%&⎯⎯) Na2S(s) + 4 CO(g)
Suppose you mix 15 g of Na2SO4 and 7.5 g of C. Which is the limiting reactant? What mass of Na2S is produced?
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