how many moles of oxygen would react with .425 mol C4H10

Question

use the equation 2C4H10+13O2----->8CO2+10H2O

 

Answer 1

when you have a balanced chemical equation like this, you can use the coefficients to determine what the mole ratio is between substances

on this one we have

2C4H10 + 13O2 -----> 8CO2 + 10H2O

meaning that the mole ratio between O2 and C4H10 is 13:2

from there then you can just use that ratio to convert!

.425 mol C4H10 x 13 mol O2 / 2 mol C4H10 = 2.7625

Answer 2

2C₄H₁₀ + 13O₂  →  8CO₂ + 10H₂O

 

Since the equation is balanced, we can set up a proportion:

 

13 moles of O₂ react with 2 moles of C₄H₁₀

x  moles of O₂ react with 0.425 moles of C₄H₁₀

 

13 → 2

x → 0.425

 

x = 13 * 0.425 / 2 = 2.7625

 

2.7625 moles of O₂ react with 0.425 moles of C₄H₁₀