Question

what is the simple way of writing a generic combustion reaction?
cxhy (o2) --> co2 + h2o
ch (o2) --> co2 + h2o
cxhy (o2) + o2 --> co2 + h2o

Explanation:

Step1: Analyze combustion reaction basics

A combustion reaction of a hydrocarbon (\(C_xH_y\)) with oxygen (\(O_2\)) produces carbon dioxide (\(CO_2\)) and water (\(H_2O\)). The general form is \(C_xH_y+O_2
ightarrow CO_2 + H_2O\).

Step2: Check each option

• Option 1: \(C_xH_y(O_2)

ightarrow CO_2 + H_2O\) is incorrect as \(O_2\) is a reactant, not part of the hydrocarbon formula in this context.

• Option 2: \(CH(O_2)

ightarrow CO_2 + H_2O\) is incorrect as it doesn't represent a general hydrocarbon (\(C_xH_y\), \(x\) and \(y\) can vary for different hydrocarbons).

• Option 3: \(C_xH_y+O_2

ightarrow CO_2 + H_2O\) is the correct general form of a hydrocarbon combustion reaction.

Answer:

The third option (\(C_xH_y+O_2
ightarrow CO_2 + H_2O\)) is the correct simple way of writing a generic combustion reaction.