Answer to Question #98906 in General Chemistry for Shea

Question

What mass of CO2 is produced when 25.00 mL sample of ethanol (density = 0.789 g/mL) combusts?



C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(l)

Answer 1

C₂H₅OH(l) + 3O₂(g) → 2CO₂(g) + 3H₂O(l)

m(C₂H₅OH) = density * volume = 0.789 g/mL * 25.00 mL = 19.7 g

46 g/mol C₂H₅OH - 2*44 g/mol CO₂

19.7 g C₂H₅OH - x g CO₂

x = 37.7 g