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C3H8 g 502 g 4H2O 3CO2 g Form the equation abov... - JAMB Chemistry 1998 Question

C3H8(g) + 502(g) → 4H2O + 3CO2(g). Form the equation above the volume of oxygen at s.t.p. required to burn 50cm3 of propane is?
A
250 cm3
B
150 cm3
C
100 cm 3
D
50 cm3
correct option: a

C3H8 + 502 → 4H2O + 3CO2.

From the equation above 1 dm3 of C3H8 require 5dm3 of O2 at s.t.p.

∴ 50cm3 of C3H8 require x = (50) / (1000) x 5 x 1

x = (250) / (1000)

x = 250cm

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