Answer
(a): $C_{6}H_{12} + 9O_{2} → 6CO_{2} + 6H_{2}O$
(b): $C_{4}H_{8} + 6O_{2} → 4CO_{2} + 4H_{2}O$
(c): $2C_{2}H_{4}O + 5O_{2} → 4CO_{2} + 4H_{2}O$
(d): $2C_{4}H_{6}O_{2} + 9O_{2} → 8CO_{2} + 6H_{2}O$
Work Step by Step
Combustion of hydrocarbons results in carbon dioxide and water vapor. Note that the same number of each of the elements must exist on the products and reactants side for each balanced reaction.