Question

cyclohexanol is burned as a fuel, according to the following equation, how many moles of oxygen are needed to produce 13.7 mol of carbon dioxide? Type the numeric value only and round to tenths place. 2C6H12O + 17O2 → 12CO2 + 12H2O

Answer 1

 The moles  of oxygen  that are needed  to produce 13.7 moles  of  carbon  dioxide  is  21.17  moles  of Oxygen

calculation

2 C₆H₁₂O  + 17 O₂ → 12 CO₂  +12 H₂O

The moles of O₂  is determined using the mole ratio

that  is for  given equation above   O₂ : Co₂  is 17 :12

therefore the moles of O ₂= 13.7   moles x 17/12 =21.17  moles

Answer 2

21.17 moles of oxygen are needed to produce 13.7 mol of carbon dioxide.

What is the stoichiometry of reaction?

Stoichiometry of any chemical reaction tells about the required amount of quantities in the reaction.

Given chemical reaction is:

2C₆H₁₂O + 17O₂ → 12CO₂ + 12H₂O

From the stoichiometry of the reaction, it is clear that:

17 moles of O₂ = produce 12 moles of CO₂

1 mole of CO₂ = produced by 17/12 moles of O₂

13.7 moles of CO₂ = produced by 13.7x17/12 = 21.17 moles

Hence, 21.17 moles of oxygen are needed.

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