Final answer:
The statement is false as the reaction is a combustion reaction, not a double replacement reaction. The correct balanced equation for the combustion of acetylene involves 2C2H2 and 5O2 reacting to produce 4CO2 and 2H2O.
Step-by-step explanation:
The statement about the double replacement reaction is false. The correct classification of the reaction given by 2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O is a combustion reaction, where a hydrocarbon (in this case, acetylene C₂H₂) reacts with oxygen to produce carbon dioxide and water. In a double replacement reaction, two compounds exchange elements to form two new compounds, which is not what is happening here.
The balanced equation for the combustion of acetylene is actually 2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O, reflecting the correct component count on both reactant and product side for carbon, hydrogen, and oxygen atoms.