Question

The formation of phosphorus pentachloride from phosphorus trichloride and chlorine gas is _____ type of combination reaction.

Answer 1

Combination reaction: These are the type of reactions in which two or more substances combine to give a product.

In the given statement, phosphorus trichloride (PCl₃) and chlorine (Cl₂) gas are combined to give phosphorus pentachloride (PCl₅)

PCl₃ + Cl₂(g)$\to$PCl₅

• In this reaction, phosphorus trichloride is a compound, and Cl₂ is an element that exists in dimeric form.

Therefore, the formation of phosphorus pentachloride from phosphorus trichloride and chlorine gas is a compound-element type of combination reaction.