Question

Consider the reaction, 2 C3H8O(g) + 9 O2(g) → 6 CO2(g) + 8 H2O(g).

Answer 1

When 12 moles of O₂ (g) react with C₃H₈O (g) then 8 moles of CO₂ (g) is produced. This is the chemical combustion reaction of propanol producing vapor of CO₂.

How to calculate the amount of CO₂ produced?

Alcohols undergo combustion reaction in the presence of oxygen gas to produce vapor of CO₂ and water.

In the given equation,

2 C₃H₈O (g) + 9 O₂ (g) → 6 CO₂ (g) + 8 H₂O (g)

To calculate the number of moles of CO₂ produced, first we have to balance the equation:

Divide the equation by 2

C₃H₈O (g) + 9/2 O₂ (g) → 3 CO₂ (g) + 4 H₂O (g)

Calculate the number of moles of CO₂ (g) produced with 1 mol of O₂ (g)

9/2 O₂ (g) → 3 CO₂ (g)

1 O₂ (g) → 3÷9/2 CO₂ (g) = 0.66 mol CO₂ (g)

For 12 mol of O₂ (g),

12 × 0.66 = 8 mol CO₂ (g)

Therefore, 8 mol of CO₂ (g) is produced from 12 mol of O₂ (g).

Learn more about Combustion reaction here:

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