Question

1. One volume of a compound of carbon, hydrogen, and oxygen was exploded with 2.5 volume of oxygen. The resultant mixture contained two volumes of water vapour and two volumes of CO2. All volumes were measured in identical conditions. Determine the formula of the compound.​

Answer 1

Answer:

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Explanation:

Let compound be CxHyOz Therfore balanced eqn is CxHyOz +(x +y /4-z /2) - - - - - >xCO2 +y/2 H2O Therfore V Litres CxHyOz will react with(x +y/4-z/2) L O2 to form x)L CO2 and y/2L H2OFrm the question ;V(x +y /4-z /2)=2.5Vx=2And Vy/2=2Solving these :Vz=1;Vx=2;Vy=4Mole fraction of H:V(y) /V(x+y+z) =4/7Mole fraction of C:V(x) /V(x+y+z) =2/7Mole fraction of O:V(z) /V(x+y+z) =1 /7Hence compound is C2H4O OR CH3CHO