Answer to Question #24794 in Inorganic Chemistry for Tico Fuga

Question

a. If 4.5 mol of ethane, C2H6, undergo combustion according to the unbalanced equation C2H6+O2---->CO2+H2O, how many moles of oxygen are required? b. How many moles of each product are formed?

Answer 1

If 4.5 mol of ethane, C₂H₆, undergo combustionaccording to the unbalanced equation the amount of O₂ is the samethat amount of ethane.

C₂H₆ + O₂ ----> CO₂ + H₂O, so it is 4.5 mol of O₂

But when it is balanced equation the amount of O₂ is next,

C₂H₆ + 7/2 O₂ ----> 2CO₂ + 3H₂O

4.5 mol* 7/2 = 15.72 mol