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Answer to Question #33015 in Organic Chemistry for savin

Question #33015
acetylene burn in air forming carbon di-oxide and water vapour calculate the volume of air required to completely burn 50 cm cube
Expert's answer
C2H2 + 5/2O2 ----------------> 2CO2 + H2O

Burning of 1 mole of C2H2 requires 2.5 mole O2

That means 2.5 x 50 cm3 = 125 cm3 O2

Let total air required is = M

20% of air = 125 cm3 O2

20 M/100 = 125 cm3 O2

M = 125 cm3 x 100/20 = 625 cm3

Answer: 625 cm3

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