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Q.

Air contains 20% O2 by volume. How much volume of air will be required for combustion of 100 cc of acetylene?

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a

500 cc

b

1064 cc

c

212.8 cc

d

1250 cc

answer is D.

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Detailed Solution

2C2H2+5O2⟶4CO2+2H2O2cc5cc100cc250cc Hence, air will be needed =10020×250=1250cc.
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