The steps in a reaction mechanism are as follows. Which species is acting as a catalyst?
Step 1: Ag⁺(aq) + Ce⁴⁺(aq) $\leftrightarrow$ Ag²⁺(aq) + Ce³⁺(aq)
Step 2: Tl⁺(aq) + Ag²⁺(aq) $\rightarrow$ Tl²⁺(aq) + Ag⁺(aq)
Step 3: Tl²⁺(aq) + Ce⁴⁺(aq) $\rightarrow$ Tl³⁺(aq) + Ce³⁺(aq)

Question

The steps in a reaction mechanism are as follows. Which species is acting as a catalyst?
Step 1: Ag⁺(aq) + Ce⁴⁺(aq)

\leftrightarrow

Ag²⁺(aq) + Ce³⁺(aq)
Step 2: Tl⁺(aq) + Ag²⁺(aq)

\rightarrow

Tl²⁺(aq) + Ag⁺(aq)
Step 3: Tl²⁺(aq) + Ce⁴⁺(aq)

\rightarrow

Tl³⁺(aq) + Ce³⁺(aq)

Quizplus · Accepted Answer

Ag⁺ is regenerated at the end of the reaction mechanism, indicating it acts as a catalyst.

The Steps in a Reaction Mechanism Are as Follows ↔\leftrightarrow↔ Ag2+(aq) + Ce3+(aq) Step 2: Tl+(aq) + Ag2+(aq)