Question

Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride.

2 upper N a upper C l (a q) plus upper C u Uppe S upper O subscript 4 (a q) right arrow upper N a subscript 2 upper S upper O subscript 4 (a q) plus upper C u upper C l subscript 2 (s).

This equation represents a
synthesis reaction.
decomposition reaction.
single replacement reaction.
double replacement reaction.

Answer 1

Double replacement reaction.

Explanation: The cations and anions swap partners (Na+ pairs with SO4^2− and Cu2+ pairs with Cl−), so two ionic compounds exchange ions to form two new ionic compounds.