Question

How many moles of carbon dioxide are produced from the complete combustion of 5.42 moles of ethanol? 2C2H6O +7 O2 ®4 CO2 + 6H2O

Answer 1

Answer: 10.84 moles of $CO_2$ will be produced from complete combustion of 5.42 moles of ethanol

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

$2C_2H_6O+7O_2\rightarrow 4CO_2+6H_2O$  

According to stoichiometry :

2 moles of ethanol produce =  4 moles of $CO_2$

Thus 5.42 moles of ethanol will produce=$\frac{4}{2}\times 5.42=10.84moles$  of $CO_2$  

Thus 10.84 moles of $CO_2$ will be produced from complete combustion of 5.42 moles of ethanol