Chemistry - Mole Concept Question with Solution | TestHub

A mixture of three gases an alkane (general formula ${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}+2}$ ), an alkene (general formula ${\mathrm{C}}_{\mathrm{x}}{\mathrm{H}}_{2\mathrm{x}}$ ) and ${\mathrm{O}}_2$ was subjected to sparking to cause combustion of both the hydrocarbon at $127^{\circ }\mathrm{C}$. After the reaction three gases were present and none of the hydrocarbon remained. On passing the gases through KOH (absorb ${\mathrm{CO}}_2$ ), an increment in mass of KOH solution by 132 gm was observed. The remaining gases were passed over white anhydrous ${\mathrm{CuSO}}_4$ and the weight of blue hydrated ${\mathrm{CuSO}}_4$ crystals was found to be 72 gm more than that of white anhydrous ${\mathrm{CuSO}}_4$. Given that initially total 10 moles of the three gases were taken and moles of alkane and alkene were equal and if molecular mass of alkene - molecular mass of alkane $=12$ i.e. $({\mathrm{M}}_{\text{alkene }}-{\mathrm{M}}_{\text{alkane }}$ $=12$ ), then answer the following questions. (Show calculations)