Question

The combustion of liquid octane, C₈H₁₈, in the presence of gaseous oxygen yields carbon dioxide and liquid water. Write the balanced equation for the reaction, including physical states.

Answer 1

The balanced Chemical reaction is : 20g 4,8 ( l) + 250g (g) 1600g (g) +18H20 (1) Explaination: CG Hold) + Q (9) Co (8) + 40 (d) Octane • To balance the reaction, select any easiest ator : eg we take c here: Left side c=8 right side = 1 u we multiply night side CO2 by 8 Now sixn is: 18418 + 8 8 02 +420 Left side, C=8 c=8 on right side H =18 Now balance is (8418 + 8 8 0 . ago (=8 C = 8 4 =18 4 =18 0=2 O = 25

Now balance Oxygen. Ho Gylle + anesty – 809 + 91, 0 To remove fractions as coefficient , multiply the whole eqr by 2 2 [ Cg H18 + 25 O 2 [800g + 9420] 12 18h18 (W + 250 (9) 160, 19) + 1870 (2) /

Note: never change the subscripts to balance the equation, only put coefficient before molecules because changing the subscripts will change the structure of molecules.