Acommon reaction is the formation of butyric acid from butyl alcohol. butyric acid is what causes the odor of rancid butter. balance the equation for the oxidation of butyl alcohol. c4; h9oh +o2 → c4h7o2h + h2o

Butyl Alcohol on reaction with Oxygen produces Butyric Acid and Water.

The Balance Chemical equation is as follow,

                         C₄H₉OH  +  O₂   →   C₄H₇O₂H  +  H₂O

Result:
          The equation given in statement is already balanced. 

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na