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Answer to Question #24208 in Organic Chemistry for tanmay khare

Question #24208
Q1. Acetylene[C2H2] burns in air forming carbon dioxide and water vapour. Calcu;late the volume of air reqired to completely burn 50cm3 of acetylene [assume air contains 20% of axygen
Expert's answer
Reaction of burning of acetylene:

50cm^3 V
2HC=CH + 3O2 = 4CO2 + 2H2O
2 3

Volume is next:

V= 50 * 3 /2 = 75 cm3 of Oxygen required for this burning.

If 75 cm3 is 20 %
x is 100%

x= 375 cm^3 of air.

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