When 21.3 moles of c3h8 burn in excess oxygen how many moles of co2 will be formed?

63.9moles

Explanation:

Given parameters:

Number of moles of C₃H₈ = 21.3moles

Unknown parameter:

Number of moles of CO₂ produced = ?

Solution

In order to find the number of moles of carbon dioxide produced we must first write the balanced reaction equation.

This reaction is a combustion of hydrocarbon reaction. It usually occurs in the presence of excess oxygen gas and the product is water and carbon dioxide.

The reaction equation is shown below:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

From the equation:

1 mole of C₃H₈ produced 3 moles of CO₂

Therefore, 21.3 moles of C₃H₈ will produce (21.3 x 3) moles of CO₂

The number of mole of carbon dioxide produced is 63.9moles