How many moles of oxygen does it take to produce 9.60 moles of carbon dioxide

Question

2C₂H₂ + 5O_{2 —>} 4CO₂ + 2H₂O

Answer 1

For this question, it is important to look at the coefficients of the balanced chemical equation.

You starting with moles of carbon dioxide and converting to moles of oxygen. The process is as follows using dimensional analysis:

9.60 mol CO₂ x (5 mol O₂ / 4 mol CO₂) = 12.0 mol O₂

1. You start with the mol of carbon dioxide as this is the only number you are given.
2. When you look at the equation, you can see that, for every 4 moles of carbon dioxide, there are 5 moles of oxygen. This means you have to multiply the number of CO₂ moles given by (5/4) in order to get the number of O₂ moles required.
3. Also, I have given the answer 3 significant figures as this is required for the question.

Answer: It takes 12.0 moles of oxygen to produce 9.60 moles of carbon dioxide.

Answer 2

Find an answer here

https://youtu.be/eliO9cIxmFM