Question

Isooctane, C8H18, is one of the main constituents of gasoline. calculate the mass of carbon dioxide gas produced by the complete combustion of 692g of isooctane

Answer 1

Answer to the Question 63652

Isooctane, $\mathrm{C_8H_{18}}$, is one of the main constituents of gasoline. calculate the mass of carbon dioxide gas produced by the complete combustion of $692\mathrm{g}$ of isooctane

$$2 \mathrm{C_8H_{18}} + 25 \mathrm{O_2} \rightarrow 16 \mathrm{CO_2} + 18 \mathrm{H_2O}$$ $$n = \frac{m}{M}$$ $$M(\mathrm{C_8H_{18}}) = 114$$ $$n = \frac{692}{114} = 6.07 \text{ mol}$$ $$n(\mathrm{CO_2}) = \frac{6.07 \times 16}{2} = 48.56 \text{ mol}$$ $$m = n \cdot M$$ $$M(\mathrm{CO_2}) = 44 \text{ g/mol}$$ $$m(\mathrm{CO_2}) = 48.56 \times 44 = 2136.7 \text{ g}$$

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