Question

( cot x_{2} n+2+left(x+frac{x+1}{2}right) 0_{2} )
[
D(0,+(n+1) 4,0
]
( frac{text { vol of } 0, text { used }}{text { vol. of } cos text { formed }}=frac{7}{4} )
[
frac{frac{7+left(frac{n+1}{2}right)}{2}}{sqrt{x}=2}=frac{7}{4}
]
Hence the raple cular for mula ig ( C_{2} mathrm{H}_{6} ).

# CHEMISTRY A gaseous alkane is exploded with oxygen. The moles of O, for complete combustion and CO, formed is in the ratio 7:4. Deduce molecular formula of alkane.

Solution