Identify the limiting reagent and the volume..?

5. Identify the limiting reagent and the volume of CO2 formed when 11 L CS2 reacts with 18 L O2 to produce CO2 gas and SO2 gas at STP

CS2 (g) + 3O2 → CO2 (g) + 2SO2 (g)

a. O2; 6.0 L CO2

b. CS2; 5.5 L CO2

c. O2; 27 L CO2

d. Cs2; 11 L CO2

1 Answer

  • Limiting reagent is O2 because you do not have enough amount of oxygen to react with CS2.

    18 L O2 * (1 mol O2 / 22.4 L O2) * (1 mol CO2 / 3 mol O2) * (22.4 L CO2 / 1 mol CO2) = 6.0 L CO2

    Answer: A

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