Final answer:
The given equation is a combustion reaction, where a hydrocarbon reacts with oxygen to form carbon dioxide and water.
Step-by-step explanation:
The type of reaction represented by the equation 2 C₁₀H₂ + 31 O₂ (g) → 20 CO₂(g) + 22 H₂O (l) is a combustion reaction. In a combustion reaction, a substance typically reacts with oxygen to produce heat and light, often yielding carbon dioxide and water as products.
This particular reaction involves the combustion of a hydrocarbon (C₁₀H₂) with oxygen, which characteristically produces carbon dioxide (CO₂) and water (H₂O) in the gaseous and liquid states, respectively.