Question

what type of reaction is zn + cucl₂ → cu + zncl₂?
a. single - replacement
b. synthesis
c. double - replacement
d. decomposition

Explanation:

In a single - replacement reaction, one element replaces another element in a compound. Here, zinc (Zn) replaces copper (Cu) in copper(II) chloride ($CuCl_2$) to form zinc chloride ($ZnCl_2$) and copper (Cu). Synthesis reactions involve two or more substances combining to form one product. Double - replacement reactions involve the exchange of ions between two compounds. Decomposition reactions involve a single compound breaking down into two or more simpler substances.

Answer:

A. Single - replacement