An ideal gaseous mixture of ethane (\({\mathrm{C}}_{2}{\mathrm{H}}_{6}\)) and ethene (\({\mathrm{C}}_{2}{\mathrm{H}}_{4}…

An ideal gaseous mixture of ethane (\({\mathrm{C}}_{2}{\mathrm{H}}_{6}\)) and ethene (\({\mathrm{C}}_{2}{\mathrm{H}}_{4}\)) occupies 28 liter at 1 atm and 273 K. The mixture reacts completely with 128 g \({\mathrm{O}}_{2}\)to produce \({\mathrm{CO}}_{2}\) and \({\mathrm{H}}_{2}\mathrm{O}\). The mole fraction at \({\mathrm{C}}_{2}{\mathrm{H}}_{6}\) in the mixture is: