Which is the number of moles of carbon dioxide produced from the complete combustion of 5.2 moles of ethanol? C2H6O + O2 CO2 +H2O A. 5.42 moles B. 2.71 moles C. 10.84 moles D. 16.3 moles

Respuesta :

Answer:

10.4 moles of carbon dioxide

Explanation:

Equation of the reaction;

C2H5OH(l)+3O2(g)⟶2CO2(g)+3H2O(l)

In solving questions on stoichiometry, we must first be armed with the balanced chemical reaction equation as this is the basis for all the calculations to be done.

From the equation;

1 mole of ethanol produced 2 moles of carbon dioxide

Therefore, 5.2 moles of ethanol will produce 5.2 ×2/1 = 10.4 moles of carbon dioxide

The number of moles of carbon dioxide produced is 10.4 moles of carbon dioxide.

Calculation of the number of moles:

The reaction equation should be

C2H5OH(l)+3O2(g)⟶2CO2(g)+3H2O(l)

here

1 mole of ethanol produced 2 moles of carbon dioxide

So, for complete combustion, the number of moles should be

= 5.2 ×2/1

= 10.4 moles of carbon dioxide

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