Question

what type of reaction is shown below?
2 nabr (aq) + cl2 (g) → 2 nacl (s) + br2 (l)
double replacementsynthesisisdecompositionsingle replacement

Explanation:

• Double replacement: In a double - replacement reaction, two compounds exchange ions. Here, it is not the case as one of the reactants (\(Cl_2\)) is an element.
• Synthesis: A synthesis reaction has the form \(A + B

ightarrow AB\). The given reaction \(2NaBr(aq)+Cl_2(g)
ightarrow 2NaCl(s)+Br_2(l)\) does not fit this form.

• Decomposition: A decomposition reaction has the form \(AB

ightarrow A + B\). The given reaction is not of this type.

• Single replacement: A single - replacement reaction has the form \(A+BC

ightarrow AC + B\). In the reaction \(2NaBr(aq)+Cl_2(g)
ightarrow 2NaCl(s)+Br_2(l)\), \(Cl\) (from \(Cl_2\)) replaces \(Br\) in \(NaBr\) (since \(Cl\) is more reactive than \(Br\) in the halogen series).

Answer:

single replacement