A gaseous alkane undergoes complete combustio | vedclass

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(B) The general combustion reaction for an alkane $C_nH_{2n+2}$ is: $C_nH_{2n+2} + (\frac{3n+1}{2}) O_2 	o n CO_2 + (n+1) H_2O$ According to the stoi

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$C_2H_6$

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(B) The general combustion reaction for an alkane $C_nH_{2n+2}$ is: $C_nH_{2n+2} + (\frac{3n+1}{2}) O_2 	o n CO_2 + (n+1) H_2O$ According to the stoichiometry,the volume ratio of $O_2$ to $CO_2$ is given by: $\frac{Volume 	ext{ of } O_2}{Volume 	ext{ of } CO_2} = \frac{\frac{3n+1}{2}}{n} = \frac{7}{4}$ Multiplying both sides: $4(3n+1) = 14n$ $12n + 4 = 14n$ $2n = 4$ $n = 2$ Substituting $n=2$ into the general formula $C_nH_{2n+2}$,we get $C_2H_6$.

$A$ gaseous alkane undergoes complete combustion with oxygen. The ratio of the volume of $O_2$ required to the volume of $CO_2$ formed is $7 : 4$. The molecular formula of the alkane is:

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