Chemistry
JAMB 1988
One mole of propane is mixed with five moles of oxygen. The mixture is ignited and the propane burns completely. What is the volume of the products at s.t.p?
(G.M.V = 22.4 dm
3 mol
-1)
-
A.
112.0 dm3
-
B.
67.2 dm3
-
C.
56.0 dm3
-
D.
44.8 dm3
Correct Answer: Option B
Explanation
C3H8 + 5O2 → 3CO2 + 4H2O
When the mixture is ignited CO2 is collected as product. From the equation 33 moles of CO2 is produced which equals 3 x 2.4 dm3 = 67.2 dm3 at S.T.P
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