Question

Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride.
\[2NaCl(aq) + CuS{O_4}(aq) \to N{a_2}S{O_4}(aq) + CuC{l_2}(s).\]What type of reaction is this?

Answer 1

Hint: As we know that a single displacement reaction which is also called as single replacement reaction is a kind of oxidation-reduction chemical reaction when an ion or element moves out of a compound, i.e., one element is replaced by the other in a compound.

Complete answer:
Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions. In double replacement reactions, the positive ions exchange negative ion partners. Many double displacement reactions occur between ionic compounds that are dissolved in water. A double replacement reaction is represented by the general equation.
$AB + CD \to AD + CB$
Aqueous sodium chloride, \[NaCl\] will not react with aqueous copper (II) sulfate, \[CuS{O_4}\] because the two potential products are soluble in aqueous solution. The chemical equation given to you is actually incorrect because copper (II) chloride, \[CuC{l_2}\] is not insoluble in aqueous solution. In fact, it is quite soluble. This means that the reaction does not produce an insoluble solid that precipitates out of solution.
Sodium chloride and copper (II) sulfate are both soluble ionic compounds that dissociate completely in aqueous solution.
\[NaCl(aq) \to N{a^ + }(aq) + C{l^ - }(aq)\]
\[CuS{O_4}(aq) \to C{u^{2 + }}(aq) + S{O_4}^{2 - }(aq)\]
Sodium sulfate, \[N{a_2}S{O_4}\], and copper (II) chloride, \[CuC{l_2}\] are soluble in aqueous solution as well, which means that they exist as ions in solution
\[N{a_2}S{O_4}(aq) \to 2N{a^ + }(aq) + S{O_4}^{2 + }(aq)\]
\[CuC{l_2}(aq) \to C{u^{2 + }}(aq) + 2C{l^ - }(aq)\]
The reaction between sodium chloride and copper sulphate is a double displacement reaction which produces sodium sulphate and copper chloride as shown in the above reaction.

Note:
We need to remember that a neutralization reaction is a chemical reaction in which an acid and a base react to form salt and water. The pH of the salt formed depends on the pH of the reacting acids and bases. There are two ionic compounds that exchange anions or cations in double substitution reactions.