Question

What reaction type is depicted by the following equation? 2C2H2 + 5O2 4CO2 + 2H2O decomposition combination combustion single-replacement double-replacement

Answer 1

Answer: The given reaction represents a combustion reaction.

Explanation:

Decomposition reaction is defined as the chemical reaction in which a single substance breaks down into two or more simpler substances.

$AB\rightarrow A+B$

Combination reaction is defined as the reaction in which two or more smaller substances combine to form a single large substance.

$A+B\rightarrow AB$

Combustion reaction is defined as the reaction in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide and water.

$C_xH_y+O_2\rightarrow CO_2+H_2O$

A double displacement reaction is defined as the reaction in which exchange of ions takes place.

$AB+CD\rightarrow AD+CB$

A single displacement reaction is defined as the reaction in which a more reactive element displaces a less reactive element from its chemical reaction.  The reactivity of metal is determined by a series known as reactivity series.

$AB+C\rightarrow CB+A$

Metal C is more reactive than metal A.

For the given chemical reaction:

$2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O$

This is considered as a combustion reaction because ethene reacts with oxygen gas to produce carbon dioxide and water molecule.

Answer 2

combustion is when you burn something in presence e of oxygen and the products will be mainly the CO2 and H2O