How is the complete combustion of hexanes represented in a chemical reaction?

2 Answers
May 18, 2017

Answer:

#C_6H_14(l) + 19/2O_2(g) rarr 6CO_2(g) +7H_2O(l) +Delta#

Explanation:

Is charge balanced? Tick. Is mass balanced? Tick.

The #Delta# symbol represents the fact that this is an exothermic reaction, and the #"heat"# evolved may be utilized to do #"work"#.

Most such combustion reactions, certainly in the #"internal combustion engine"#, exhibit incomplete reaction, and both #CO(g)# and particulate #C(s)# are oxidation products.

May 18, 2017

Answer:

#2C_6H_14 (l) + 19O_2 (g) rarr 12CO_2 (g)+ 14 H_2O (g)#

Explanation:

Write the (first unbalanced) chemical equation:

#C_6H_14 (l) + O_2 (g) rarr CO_2 (g)+ H_2O (g)#

Balanced:

#2C_6H_14 (l) + 19O_2 (g) rarr 12CO_2 (g)+ 14 H_2O (g)#