Question

1. which type of reaction is illustrated by the equation 2h₂o → 2h₂ + o₂?

a. double displacement
b. decomposition
c. single displacement
d. synthesis

Explanation:

In a decomposition reaction, a single compound breaks down into two or more simpler substances. Here, water ($H_2O$) breaks down into hydrogen ($H_2$) and oxygen ($O_2$). In double - displacement reactions, two compounds exchange ions. In single - displacement reactions, one element replaces another in a compound. In synthesis reactions, two or more substances combine to form a single compound.

Answer:

B. Decomposition