Question

1. choose the best answer.

which of these is a liquid during the chemical reaction?
al(s) + br₂(l) → albr₃(s)
albr₃
br₂
al
none of these

Explanation:

In the given chemical reaction $\ce{Al}(s) + \ce{Br_2}(l)
ightarrow \ce{AlBr_3}(s)$, the state symbols are used to indicate the physical state of each substance. The symbol $(l)$ represents a liquid. Here, $\ce{Br_2}$ has the state symbol $(l)$, meaning it is a liquid during the reaction. $\ce{Al}$ is a solid (indicated by $(s)$) and $\ce{AlBr_3}$ is also a solid (indicated by $(s)$).

Answer:

B. $\ce{Br_2}$