Question

In a spacecraft, this reaction occurs:

CO2(g)+2LiOH(s)→LiCO3(s)+H2O(l)

How many liters of carbon dioxide will 3 moles of lithium hydroxide (LiOH) absorb?

(One mole of any gas occupies 22.4 L under certain conditions of temperature and pressure. Assume those conditions for this question.)

Responses

20 L
20 L

34 L
34 L

6.0 L

6.0 L

3.0 L

3.0 L

Answer 1

Stoichiometry: 2 LiOH react with 1 CO2, so 3.00 mol LiOH will absorb 3.00*(1/2) = 1.50 mol CO2.
Volume = 1.50 mol × 22.4 L/mol = 33.6 L ≈ 34 L.

Answer: 34 L.