In the complete combustion of butane the number of oxygen molecules required is:

\frac{13}{2}

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\frac{9}{2}

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Solution

The correct option is A $\frac{13}{2}$
The process of heating a substance in the presence of sufficient air/ $O_{2}$ .
The substance is completely oxidised to $C O_{2} a n d H_{2} O$ accompanied by evolution of a large amount of heat.
combustion reaction of ethane is given by
$C_{4} H_{10} + \frac{13}{2} O_{2} \to 4 C O_{2} + 5 H_{2} O + Δ$

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2 C_{4} H_{10} + 13 O_{2} \to 8 C O_{2} + 10 H_{2} O

O_{2}

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