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?
-
250 cm3
- 150 cm3
- 100 cm 3
- 50 cm3
The correct answer is: A
Explanation
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