Questions: Which of the following is a DOUBLE-REPLACEMENT reaction?
4 NaCl(s) + O2(g) → 2 Na2 O(s) + 2 Cl2(g)
2 NaCl(s) + 3 O2(g) → 2 NaClO3(s)
2 NaCl(aq) + CaO(aq) → Na2 O(aq) + CaCl2(aq)
2 NaClO3(s) → 2 NaCl(s) + 3 O2(g)
Transcript text: Which of the following is a DOUBLE-REPLACEMENT reaction?
$4 \mathrm{NaCl}(s)+\mathrm{O}_{2}(g) \rightarrow 2 \mathrm{Na}_{2} \mathrm{O}(s)+2 \mathrm{Cl}_{2}(g)$
$2 \mathrm{NaCl}(s)+3 \mathrm{O}_{2}(g) \rightarrow 2 \mathrm{NaClO}_{3}(s)$
$2 \mathrm{NaCl}(a q)+\mathrm{CaO}(a q) \rightarrow \mathrm{Na}_{2} \mathrm{O}(a q)+\mathrm{CaCl}_{2}(a q)$
$2 \mathrm{NaClO}_{3}(s) \rightarrow 2 \mathrm{NaCl}(s)+3 \mathrm{O}_{2}(g)$
Solution
Solution Steps
Step 1: Identify the Reaction Types
To determine which reaction is a double-replacement reaction, we need to understand the characteristics of different types of chemical reactions. A double-replacement reaction involves the exchange of ions between two compounds, resulting in the formation of two new compounds.
Step 2: Analyze Each Reaction
Let's analyze each given reaction to identify the double-replacement reaction: