C2H6 + O2 → CO2 + H2O How many moles of CO2 are produced during the complete combustion of 3.6 moles of C2H6? 1.8 moles 4.4 moles 7.2 moles 9.2 moles

7.2 moles

Explanation:

Given the equation:

C2H6 + O2 → CO2 + H2O

First step is to balance the equation:

For complete combustion of ethane :

2C2H6 + 7O2 → 4CO2 + 6H2O

From the equation above, Mole ratio of ethane to CO2 ;

2C2H6 : 4CO2

2 : 4, reducing to lowest term; 1 : 2

Thus ;

1 mole C2H6 - - - - > 2 moles CO2

Therefore when ;

3.6 moles C2H6 - - - - > x moles CO2

x - - - - > (2 × 3.6) moles

x - - - > 7.2 moles

Therefore,

3.6 moles C2H6 = 7.2 moles CO2

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