In igniting a mixture of acetylene and oxygen, 200cm3 of CO2 is collected at stp. Calculate the volume of acetylene and oxygen at stp in the original mixture.
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2C2H2 + 5O2 - 4CO2 + 2H2O
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2CH2H2+5O2--->4Co2+2H2O
Balanced equation
4vol of co2 is produced from 2vol of acetylene
1vol of acetylene will produced from 2/4
So200cm3of co2 will be produced from 200×2/4=100cm3
4vol of co2 is produced from 5vol of o2
1vol of co2 will produced from =5/4
200cm3 ofCo2 will be produced from 200×5/4=250cm3
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