Question

_c h 3 c h 2 c o o h+ _0 2 -》 _h 2 o + co2 how many molecules of o2 are required for the complete combustion of 6 moles of propanoic acid

Answer 1

21 molecules of oxygen.

Step-by-step explanation:

The balanced equation is

2CH3CH2COOH + 7O2 -----> 6CO2 + 6H2O.

So 2 molecules of propanoic acid require 7 moles of oxygen.

Therefore 6 molecules require 7/2 * 6 = 21 molecules of oxygen.