Question

sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride.
2nacl(aq) + cuso₄(aq) → na₂so₄(aq) + cucl₂(s)
this equation represents a
synthesis reaction.
decomposition reaction.
single replacement reaction.
double replacement reaction.

Explanation:

1. Synthesis reaction: Involves combining substances to form a single product (e.g., \( A + B

ightarrow AB \)). The given reaction has two products, so not synthesis.

1. Decomposition reaction: Involves breaking down a single compound into simpler substances (e.g., \( AB

ightarrow A + B \)). The given reaction has two reactants, so not decomposition.

1. Single replacement reaction: Involves one element replacing another in a compound (e.g., \( A + BC

ightarrow AC + B \)). Here, two ions are exchanged, not a single element replacement.

1. Double replacement reaction: Involves the exchange of ions between two compounds (e.g., \( AB + CD

ightarrow AD + CB \)). In \( 2NaCl(aq) + CuSO_4(aq)
ightarrow Na_2SO_4(aq) + CuCl_2(s) \), \( Na^+ \) and \( Cu^{2+} \) exchange with \( Cl^- \) and \( SO_4^{2-} \), matching the double replacement pattern.

Answer:

double replacement reaction.