Question

How to find how many moles of CO₂ are produced when 4.9 mol of C₂H₂react?

a. Use the stoichiometric coefficients from the balanced chemical equation.
b. Perform a molar mass calculation.
c. Apply Avogadro's principle.
d. Utilize the ideal gas law.

Answer 1

To find the number of moles of CO₂ produced from 4.9 mol of C₂H₂, use the stoichiometric coefficients from the balanced equation, showing that 4 moles of CO₂ are produced for every mole of C₂H₂, resulting in 19.6 moles of CO₂.

Step-by-step explanation:

To find out how many moles of CO₂ are produced when 4.9 moles of C₂H₂ react, you would primarily need to use the stoichiometric coefficients from the balanced chemical equation. The combustion of C₂H₂, which is acetylene, typically looks like this:

C₂H₂ + 5O₂ → 4CO₂ + 2H₂O

From this balanced equation, we can see that the molar ratio of acetylene (C₂H₂) to carbon dioxide (CO₂) is 1:4. Therefore, for every mole of C₂H₂, 4 moles of CO₂ are produced. To find the moles of CO₂ produced from 4.9 moles of C₂H₂, you would use this ratio:

(4 moles CO₂ / 1 mole C₂H₂) × 4.9 moles C₂H₂ = 19.6 moles of CO₂