Question

types of reactions
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sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride.
$2nacl(aq) + cuso_4(aq) \
ightarrow na_2so_4(aq) + cucl_2(s)$
this equation represents a
synthesis reaction.
decomposition reaction.
single replacement reaction.
double replacement reaction.

Explanation:

A double replacement reaction involves two ionic compounds swapping their positive and negative ions to form new compounds. In the given reaction, sodium ($\text{Na}^+$) and copper ($\text{Cu}^{2+}$) swap their anions (chloride $\text{Cl}^-$ and sulfate $\text{SO}_4^{2-}$) to form sodium sulfate and copper chloride, which matches this reaction type. Synthesis reactions combine reactants into one product, decomposition breaks one reactant into multiple products, and single replacement involves one element replacing another in a compound, none of which fit here.

Answer:

double replacement reaction.