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how many moles of oxygen are needed for the combustion of one mole of cyclohexane

how many moles of oxygen are needed for the combustion of one mole of cyclohexane
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Answer #1

Ciclohexane has the molecular formula C6H12 so the overall reaction will be:

C6H6 + O2 ----------> CO2 + H2O

Balancing this reaction:

2C6H6 + 15O2 ----------> 12CO2 + 6H2O or   C6H6 + 15/2O2 ----------> 6CO2 + 3H2O

So, in this case we'll use the second balanced reaction (although you may use the first one and the result will be the same)

1 mole of C6H6 needs 15/2 moles of O2 which would be:

moles of O2 = 1 * 15/2 = 7.5 moles of O2

Hope this helps

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