Question

reactions learning check
balance the reaction, then label the type of reaction:
c5h12 + o2 →
co2 + h2o + heat
reaction type:

Explanation:

Step1: Balance carbon atoms

For \(C_5H_{12}\), there are 5 carbon atoms. So, the coefficient of \(CO_2\) is 5.
\(C_5H_{12}+O_2
ightarrow5CO_2 + H_2O\)

Step2: Balance hydrogen atoms

There are 12 hydrogen atoms in \(C_5H_{12}\). So, the coefficient of \(H_2O\) is 6.
\(C_5H_{12}+O_2
ightarrow5CO_2 + 6H_2O\)

Step3: Balance oxygen atoms

On the right - hand side, there are \(5\times2+6\times1 = 16\) oxygen atoms. So, the coefficient of \(O_2\) is 8.
\(C_5H_{12}+8O_2
ightarrow5CO_2 + 6H_2O\)

Since the reaction is between a hydrocarbon (\(C_5H_{12}\)) and oxygen (\(O_2\)) to produce carbon dioxide (\(CO_2\)), water (\(H_2O\)) and heat, it is a combustion reaction.

Answer:

\(1C_5H_{12}+8O_2
ightarrow5CO_2 + 6H_2O\)
Reaction type: Combustion reaction