Ten millilitre ofa mixture of methane, ethylene, and carbon dioxide was exploded with excess of air: After the explosion, there was contraction of 17 ml and after treatment with `KOH`, there was a further contraction of 14 ml. What was the composition of the mixture?

Ten millilitre ofa mixture of methane, ethylene, and carbon dioxide wa

1.	Ten millilitre ofa mixture of methane, ethylene, and carbon dioxide was exploded with excess of air: After the explosion, there was contraction of 17 ml and after treatment with `KOH`, there was a further contraction of 14 ml. What was the composition of the mixture?
Answer» Let the volume of `CH_4` be x mL Volume of `(CH_2=CH_2)=ymL` Volume of `CO_2=[10-(x+y)]mL` (a). `CH_4(g)+2O_2(g)toCO_2(g)+2H_2O(l)` (b). `CH_2=CH_2(g)+3O_2(g)to2CO_2(g)+H_2O(l)` Volume of `CO_2` absorbed by `KOH=14mL` `thereforey=4mL` Volume of gaseous reactant `=` volume of gaseous production`+`constraction `x+2x+y+3Y=x+2y+17` `3x+4y-x-2y=17` `2x+2y=17` `2x+2xx4=17` `2x=9` `x=4.5mL` Volume of `CH_4=4.5mL` Volume of `CH_2=CH_2=4mL` Volume of `CO_2=10-(4.5+4)=1.5mL`

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Ten millilitre ofa mixture of methane, ethylene, and carbon dioxide was exploded with excess of air: After the explosion, there was contraction of 17 ml and after treatment with `KOH`, there was a further contraction of 14 ml. What was the composition of the mixture?

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